diff --git a/assembly/src/json.ts b/assembly/src/json.ts
index 68f9e3b..b073251 100644
--- a/assembly/src/json.ts
+++ b/assembly/src/json.ts
@@ -117,9 +117,9 @@ export namespace JSON {
       let keys = data.keys();
       let values = data.values();
       for (let i = 0; i < data.size; i++) {
-        result.write(serializeString(keys[i].toString()));
+        result.write(serializeString(unchecked(keys[i]).toString()));
         result.writeCodePoint(colonCode);
-        result.write(JSON.stringify(values[i]));
+        result.write(JSON.stringify(unchecked(values[i])));
         if (i < data.size - 1) {
           result.writeCodePoint(commaCode);
         }
diff --git a/bench/benchmark.ts b/bench/benchmark.ts
index 6b8eb31..70b28e1 100644
--- a/bench/benchmark.ts
+++ b/bench/benchmark.ts
@@ -27,29 +27,29 @@ bench("Parse Number STDLIB", () => {
     blackbox<i32>(i32.parse("12345"));
 });
 */
-bench("Stringify Object (Vec3)", () => {
-    blackbox<string>(JSON.stringify(vec));
-});
+// bench("Stringify Object (Vec3)", () => {
+//     blackbox<string>(JSON.stringify(vec));
+// });
 
 bench("Parse Object (Vec3)", () => {
     blackbox<Vec3>(JSON.parse<Vec3>('{"x":0,"y":0,"z":0}'));
 });
 
-bench("Stringify Number Array", () => {
-    blackbox<string>(JSON.stringify<i32[]>([1, 2, 3]));
-});
+// bench("Stringify Number Array", () => {
+//     blackbox<string>(JSON.stringify<i32[]>([1, 2, 3]));
+// });
 
-bench("Parse Number Array", () => {
-    blackbox<i32[]>(JSON.parse<i32[]>(blackbox("[1,2,3]")));
-});
+// bench("Parse Number Array", () => {
+//     blackbox<i32[]>(JSON.parse<i32[]>(blackbox("[1,2,3]")));
+// });
 
-bench("Stringify String", () => {
-    blackbox<string>(JSON.stringify(blackbox('Hello "World!')));
-});
+// bench("Stringify String", () => {
+//     blackbox<string>(JSON.stringify(blackbox('Hello "World!')));
+// });
 
-bench("Parse String", () => {
-    blackbox<string>(JSON.parse<string>(blackbox('"Hello "World!"')));
-});
+// bench("Parse String", () => {
+//     blackbox<string>(JSON.parse<string>(blackbox('"Hello "World!"')));
+// });
 /*
 bench("Stringify Boolean Array", () => {
     blackbox(JSON.stringify<boolean[]>([true, false, true]));
@@ -57,4 +57,4 @@ bench("Stringify Boolean Array", () => {
 
 bench("Stringify String Array", () => {
     blackbox(JSON.stringify<string[]>(["a", "b", "c"]));
-});*/
\ No newline at end of file
+});*/