diff --git a/jsstate.c b/jsstate.c
index c90e135..0f026d5 100644
--- a/jsstate.c
+++ b/jsstate.c
@@ -10,15 +10,10 @@
 
 static void *js_defaultalloc(void *actx, void *ptr, int size)
 {
-#ifndef __has_feature
-#define __has_feature(x) 0
-#endif
-#if __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
 	if (size == 0) {
 		free(ptr);
 		return NULL;
 	}
-#endif
 	return realloc(ptr, (size_t)size);
 }