diff --git a/sources/apps/demo/main.c b/sources/apps/demo/main.c
index 33ecdcd15..c3b7ffab5 100644
--- a/sources/apps/demo/main.c
+++ b/sources/apps/demo/main.c
@@ -1,4 +1,3 @@
-#include <brutal-alloc>
 #include <brutal-io>
 #include <brutal-ui>
 
diff --git a/sources/kernel/init.c b/sources/kernel/init.c
index a227b5fab..98790a0f3 100644
--- a/sources/kernel/init.c
+++ b/sources/kernel/init.c
@@ -1,7 +1,8 @@
-#include "kernel/init.h"
 #include <brutal-alloc>
 #include <brutal-debug>
+
 #include "kernel/heap.h"
+#include "kernel/init.h"
 #include "kernel/kernel.h"
 #include "kernel/mmap.h"
 #include "kernel/sched.h"
diff --git a/sources/libs/brutal-alloc/global.c b/sources/libs/brutal-alloc/global.c
index 90ecaeed8..0e1d6297b 100644
--- a/sources/libs/brutal-alloc/global.c
+++ b/sources/libs/brutal-alloc/global.c
@@ -2,43 +2,29 @@
 
 #include "heap.h"
 
-static Alloc *heap(void)
-{
-    static HeapAlloc heap;
-    static bool init = false;
-
-    if (!init)
-    {
-        heap_alloc_init(&heap, NODE_DEFAULT);
-        init = true;
-    }
-
-    return (Alloc *)&heap;
-}
-
 void *alloc_global_acquire(MAYBE_UNUSED Alloc *alloc, size_t size)
 {
-    embed_mem_lock();
-    void *result = alloc_acquire(heap(), size);
-    embed_mem_unlock();
+    embed_heap_lock();
+    void *result = embed_heap_acquire(size);
+    embed_heap_unlock();
 
     return result;
 }
 
 void *alloc_global_resize(MAYBE_UNUSED Alloc *alloc, void *ptr, size_t new_size)
 {
-    embed_mem_lock();
-    void *result = alloc_resize(heap(), ptr, new_size);
-    embed_mem_unlock();
+    embed_heap_lock();
+    void *result = embed_heap_resize(ptr, new_size);
+    embed_heap_unlock();
 
     return result;
 }
 
 void alloc_global_release(MAYBE_UNUSED Alloc *alloc, void *ptr)
 {
-    embed_mem_lock();
-    alloc_release(heap(), ptr);
-    embed_mem_unlock();
+    embed_heap_lock();
+    embed_heap_release(ptr);
+    embed_heap_unlock();
 }
 
 Alloc *alloc_global(void)
diff --git a/sources/libs/brutal-alloc/heap.c b/sources/libs/brutal-alloc/heap.c
index a23437622..d7b804b68 100644
--- a/sources/libs/brutal-alloc/heap.c
+++ b/sources/libs/brutal-alloc/heap.c
@@ -157,14 +157,16 @@ void *heap_alloc_acquire(HeapAlloc *alloc, size_t req_size)
         // CASE 2: It's a brand new block.
         if (maj->first == nullptr)
         {
-            maj->first = (HeapMinor *)((uintptr_t)maj + MAJOR_BLOCK_HEADER_SIZE);
-
-            maj->first->magic = ALLOC_HEAP_MAGIC;
-            maj->first->prev = nullptr;
-            maj->first->next = nullptr;
-            maj->first->block = maj;
-            maj->first->size = size;
-            maj->first->req_size = req_size;
+            HeapMinor *min = (HeapMinor *)((uintptr_t)maj + MAJOR_BLOCK_HEADER_SIZE);
+
+            min->magic = ALLOC_HEAP_MAGIC;
+            min->prev = nullptr;
+            min->next = nullptr;
+            min->block = maj;
+            min->size = size;
+            min->req_size = req_size;
+
+            maj->first = min;
             maj->usage += size + MINOR_BLOCK_HEADER_SIZE;
 
             return (void *)((uintptr_t)(maj->first) + MINOR_BLOCK_HEADER_SIZE);
@@ -182,7 +184,6 @@ void *heap_alloc_acquire(HeapAlloc *alloc, size_t req_size)
                 maj->first->prev = (HeapMinor *)((uintptr_t)maj + MAJOR_BLOCK_HEADER_SIZE);
                 maj->first->prev->next = maj->first;
                 maj->first = maj->first->prev;
-
                 maj->first->magic = ALLOC_HEAP_MAGIC;
                 maj->first->prev = nullptr;
                 maj->first->block = maj;
@@ -306,7 +307,6 @@ void heap_alloc_release(HeapAlloc *alloc, void *ptr)
     }
 
     HeapMajor *maj = min->block;
-
     maj->usage -= (min->size + MINOR_BLOCK_HEADER_SIZE);
     min->magic = ALLOC_HEAP_DEAD;
 
diff --git a/sources/libs/brutal-fmt/fmt.c b/sources/libs/brutal-fmt/fmt.c
index 84817890a..482790411 100644
--- a/sources/libs/brutal-fmt/fmt.c
+++ b/sources/libs/brutal-fmt/fmt.c
@@ -325,6 +325,11 @@ IoResult fmt_unsigned(Fmt self, IoWriter writer, uint64_t value)
         buf[i++] = '0';
     }
 
+    if (self.prefix_plus)
+    {
+        buf[i++] = '+';
+    }
+
     while (i < self.width)
     {
         buf[i++] = self.fill;
diff --git a/sources/libs/brutal-gfx/font.h b/sources/libs/brutal-gfx/font.h
index ef8c2237e..96f8687c8 100644
--- a/sources/libs/brutal-gfx/font.h
+++ b/sources/libs/brutal-gfx/font.h
@@ -7,7 +7,7 @@
 struct _Gfx;
 
 /**
-    ```
+
                                                             <- line_ascend
        _____       _             _                          <- ascend
       / ____|     | |           | |                         <- captop
@@ -19,7 +19,7 @@ struct _Gfx;
                                                 |___/       <- descend
      | ---- |                                               ...advance
                                                             <- line_descend
-    ```
+
 */
 typedef struct
 {
diff --git a/sources/libs/brutal-test/hook-alloc.h b/sources/libs/brutal-test/hook-alloc.h
index e298b3019..5316c01e1 100644
--- a/sources/libs/brutal-test/hook-alloc.h
+++ b/sources/libs/brutal-test/hook-alloc.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <brutal-alloc>
+#include <brutal-debug>
 
 #include "runner.h"
 
diff --git a/sources/libs/embed/brutal/mem.c b/sources/libs/embed/brutal/mem.c
index a4f0d53c6..a8f0d1357 100644
--- a/sources/libs/embed/brutal/mem.c
+++ b/sources/libs/embed/brutal/mem.c
@@ -1,16 +1,8 @@
 #include <bal/abi.h>
+#include <brutal-alloc>
+#include <brutal-sync>
 #include <embed/mem.h>
 
-void embed_mem_lock(void)
-{
-    // NO-OP
-}
-
-void embed_mem_unlock(void)
-{
-    // NO-OP
-}
-
 Error embed_mem_acquire(size_t size, void **out_result, MAYBE_UNUSED enum embed_mem_flag flags)
 {
     // Create the memory object
@@ -63,3 +55,39 @@ Error embed_mem_release(void *addr, size_t size)
 
     return br_result_to_error(result);
 }
+
+static HeapAlloc _heap;
+
+static Alloc *ensure_heap(void)
+{
+    static bool init = false;
+    if (!init)
+    {
+        heap_alloc_init(&_heap, NODE_DEFAULT);
+        init = true;
+    }
+    return (Alloc *)&_heap;
+}
+
+void embed_heap_lock(void)
+{
+}
+
+void embed_heap_unlock(void)
+{
+}
+
+void *embed_heap_acquire(size_t size)
+{
+    return alloc_acquire(ensure_heap(), size);
+}
+
+void *embed_heap_resize(void *ptr, size_t size)
+{
+    return alloc_resize(ensure_heap(), ptr, size);
+}
+
+void embed_heap_release(void *ptr)
+{
+    alloc_release(ensure_heap(), ptr);
+}
diff --git a/sources/libs/embed/efi/mem.c b/sources/libs/embed/efi/mem.c
index 9b9a3ceb8..3d4e05154 100644
--- a/sources/libs/embed/efi/mem.c
+++ b/sources/libs/embed/efi/mem.c
@@ -1,7 +1,9 @@
+#include <brutal-alloc>
+#include <brutal-debug>
+#include <brutal-sync>
 #include <efi/lib.h>
 #include <efi/srvs/bs.h>
 #include <embed/mem.h>
-#include <brutal-debug>
 
 Error embed_mem_acquire(size_t size, void **out_result, MAYBE_UNUSED enum embed_mem_flag flags)
 {
@@ -23,10 +25,38 @@ Error embed_mem_release(void *addr, MAYBE_UNUSED size_t size)
     return ERR_SUCCESS;
 }
 
-void embed_mem_lock(void)
+static HeapAlloc _heap;
+
+static Alloc *ensure_heap(void)
+{
+    static bool init = false;
+    if (!init)
+    {
+        heap_alloc_init(&_heap, NODE_DEFAULT);
+        init = true;
+    }
+    return (Alloc *)&_heap;
+}
+
+void embed_heap_lock(void)
+{
+}
+
+void embed_heap_unlock(void)
+{
+}
+
+void *embed_heap_acquire(size_t size)
+{
+    return alloc_acquire(ensure_heap(), size);
+}
+
+void *embed_heap_resize(void *ptr, size_t size)
 {
+    return alloc_resize(ensure_heap(), ptr, size);
 }
 
-void embed_mem_unlock(void)
+void embed_heap_release(void *ptr)
 {
+    alloc_release(ensure_heap(), ptr);
 }
diff --git a/sources/libs/embed/kernel/mem.c b/sources/libs/embed/kernel/mem.c
index 81f37e478..05cfa37ce 100644
--- a/sources/libs/embed/kernel/mem.c
+++ b/sources/libs/embed/kernel/mem.c
@@ -1,20 +1,11 @@
-#include <embed/mem.h>
 #include <brutal-debug>
 #include <brutal-sync>
+#include <embed/mem.h>
+
 #include "kernel/heap.h"
 
 static Lock _lock;
 
-void embed_mem_lock(void)
-{
-    lock_acquire(&_lock);
-}
-
-void embed_mem_unlock(void)
-{
-    lock_release(&_lock);
-}
-
 Error embed_mem_acquire(size_t size, void **out_result, MAYBE_UNUSED enum embed_mem_flag flags)
 {
     HeapResult alloc_result = heap_alloc(size);
@@ -35,3 +26,42 @@ Error embed_mem_release(void *addr, size_t size)
     heap_free((HeapRange){(uintptr_t)addr, size});
     return ERR_SUCCESS;
 }
+
+static Lock _lock;
+static HeapAlloc _heap;
+
+static Alloc *ensure_heap(void)
+{
+    static bool init = false;
+    if (!init)
+    {
+        heap_alloc_init(&_heap, NODE_DEFAULT);
+        init = true;
+    }
+    return (Alloc *)&_heap;
+}
+
+void embed_heap_lock(void)
+{
+    lock_acquire(&_lock);
+}
+
+void embed_heap_unlock(void)
+{
+    lock_release(&_lock);
+}
+
+void *embed_heap_acquire(size_t size)
+{
+    return alloc_acquire(ensure_heap(), size);
+}
+
+void *embed_heap_resize(void *ptr, size_t size)
+{
+    return alloc_resize(ensure_heap(), ptr, size);
+}
+
+void embed_heap_release(void *ptr)
+{
+    alloc_release(ensure_heap(), ptr);
+}
diff --git a/sources/libs/embed/mem.h b/sources/libs/embed/mem.h
index 3bd3e011b..6dfd446b3 100644
--- a/sources/libs/embed/mem.h
+++ b/sources/libs/embed/mem.h
@@ -12,10 +12,6 @@ enum embed_mem_flag
     EMBED_MEM_NONE,
 };
 
-void embed_mem_lock(void);
-
-void embed_mem_unlock(void);
-
 Error embed_mem_acquire(size_t size, void **out_result, enum embed_mem_flag flags);
 
 Error embed_mem_release(void *addr, size_t size);
@@ -23,3 +19,13 @@ Error embed_mem_release(void *addr, size_t size);
 void *embed_mem_set(void *d, uint8_t s, size_t c);
 
 void *embed_mem_copy(void *to, void const *from, size_t size);
+
+void embed_heap_lock(void);
+
+void embed_heap_unlock(void);
+
+void *embed_heap_acquire(size_t size);
+
+void *embed_heap_resize(void *ptr, size_t size);
+
+void embed_heap_release(void *ptr);
diff --git a/sources/libs/embed/posix/mem.c b/sources/libs/embed/posix/mem.c
index b0a20c35e..5d4bf74f8 100644
--- a/sources/libs/embed/posix/mem.c
+++ b/sources/libs/embed/posix/mem.c
@@ -1,8 +1,9 @@
+#include <brutal-debug>
 #include <embed/mem.h>
 #include <embed/posix/err.h>
+#include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
-#include <brutal-debug>
 
 void embed_mem_lock(void)
 {
@@ -35,3 +36,28 @@ Error embed_mem_release(void *addr, size_t size)
 
     return ERR_SUCCESS;
 }
+
+void embed_heap_lock(void)
+{
+    // no-op
+}
+
+void embed_heap_unlock(void)
+{
+    // no-op
+}
+
+void *embed_heap_acquire(size_t size)
+{
+    return calloc(1, size);
+}
+
+void *embed_heap_resize(void *ptr, size_t size)
+{
+    return realloc(ptr, size);
+}
+
+void embed_heap_release(void *ptr)
+{
+    free(ptr);
+}
diff --git a/sources/utils/test/brutal/fmt/printf.c b/sources/utils/test/brutal/fmt/printf.c
index 0689e3122..e5c013ddb 100644
--- a/sources/utils/test/brutal/fmt/printf.c
+++ b/sources/utils/test/brutal/fmt/printf.c
@@ -50,4 +50,6 @@ test$(fmt_printf)
     TEST_CASE("00012", "%05d", 12);
     TEST_CASE("00123", "%05d", 123);
     TEST_CASE("0x123", "%#05x", 0x123);
+    TEST_CASE("0x123", "%#05x", 0x123);
+    TEST_CASE("0x123", "%#010x", 0x123);
 }