diff --git a/core/tiny_fastcache.h b/core/tiny_fastcache.h
index 36b604ad..2fa9f011 100644
--- a/core/tiny_fastcache.h
+++ b/core/tiny_fastcache.h
@@ -67,12 +67,16 @@ static inline uint64_t tiny_fast_rdtsc(void) { return 0; }
 
 extern int g_profile_enabled;
 static inline int tiny_fast_profile_enabled(void) {
+#if !HAKMEM_BUILD_RELEASE
     extern int g_profile_enabled;
     if (__builtin_expect(g_profile_enabled == -1, 0)) {
         const char* env = getenv("HAKMEM_TINY_PROFILE");
         g_profile_enabled = (env && *env && *env != '0') ? 1 : 0;
     }
     return g_profile_enabled;
+#else
+    return 0;
+#endif
 }
 
 // ========== Size to Class Mapping ==========