diff --git a/quickjs.h b/quickjs.h
index 5a828dd..56c8ff5 100644
--- a/quickjs.h
+++ b/quickjs.h
@@ -303,8 +303,8 @@ JS_EXTERN void JS_SetMemoryLimit(JSRuntime *rt, size_t limit);
 JS_EXTERN void JS_SetDumpFlags(JSRuntime *rt, uint64_t flags);
 JS_EXTERN void JS_SetGCThreshold(JSRuntime *rt, size_t gc_threshold);
 JS_EXTERN size_t JS_GetGCThreshold(JSRuntime *rt);
-JS_EXTERN void JS_SetGCThresholdFixed(JSRuntime *rt, BOOL fixed);
-JS_EXTERN void JS_SetGCBeforeCallback(JSRuntime *rt, BOOL(*fn)());
+JS_EXTERN void JS_SetGCThresholdFixed(JSRuntime *rt, JS_BOOL fixed);
+JS_EXTERN void JS_SetGCBeforeCallback(JSRuntime *rt, JS_BOOL (*fn)());
 JS_EXTERN void JS_SetGCAfterCallback(JSRuntime *rt, void(*fn)());
 /* use 0 to disable maximum stack size check */
 JS_EXTERN void JS_SetMaxStackSize(JSRuntime *rt, size_t stack_size);