diff --git a/src/bindings.lisp b/src/bindings.lisp
index a409a9f8..ad39dfd1 100644
--- a/src/bindings.lisp
+++ b/src/bindings.lisp
@@ -124,14 +124,21 @@ defining an error map with a non-nil FATAL-ERROR is undefined.")
                             :if-exists :supersede)
       (format stream "#define ~A~%~%" build-flag)
       (format stream "#include ~s~%~%" header-name)
+      #-win32
       (format stream "#include <setjmp.h>~%")
+      #+win32
+      (format stream "#include <stdint.h>~%")
       (format stream "#include <stdio.h>~%~%")
+      #-win32
       (format stream "__thread jmp_buf fatal_lisp_error_handler;~%~%")
+      #+win32
+      (format stream "__thread intptr_t fatal_lisp_error_handler[5];~%~%")
       (when *non-static-lossage-handler*
         (format stream "extern void (*lossage_handler)(void);~%~%"))
       (format stream "extern void ldb_monitor(void);~%~%")
       (format stream "int fatal_sbcl_error_occurred = 0;~%~%")
-      (format stream "void return_from_lisp(void) { fatal_sbcl_error_occurred = 1; fflush(stdout); fflush(stderr); longjmp(fatal_lisp_error_handler, 1); }~%~%")
+      (format stream "void return_from_lisp(void) { fatal_sbcl_error_occurred = 1; fflush(stdout); fflush(stderr); ~a(fatal_lisp_error_handler, 1); }~%~%"
+              #-win32 "longjmp" #+win32 "__builtin_longjmp")
       (dolist (api (library-apis library))
         (write-api-to-source api stream))
       (unless omit-init-function
diff --git a/src/function.lisp b/src/function.lisp
index 92379369..e8019c6a 100644
--- a/src/function.lisp
+++ b/src/function.lisp
@@ -91,11 +91,12 @@ cause a normal crash and not return control to this function."
                                           (list "result"))))))
         (format nil "~a {~%~a~%}~%"
                 header
-                (format nil "    if (!setjmp(fatal_lisp_error_handler)) {
+                (format nil "    if (!~a(fatal_lisp_error_handler)) {
         ~a
     } else {
         ~a
-    }" call-statement (if (and error-map (error-map-fatal-code error-map))
+    }" #-win32 "setjmp" #+win32 "__builtin_setjmp"
+       call-statement (if (and error-map (error-map-fatal-code error-map))
                           (format nil "return ~d;" (error-map-fatal-code error-map))
                           (format nil "ldb_monitor();"))))))))