diff --git a/core/config.h b/core/config.h
index a00d241c..e3044975 100644
--- a/core/config.h
+++ b/core/config.h
@@ -282,6 +282,10 @@
 #define WASM_ENABLE_GLOBAL_HEAP_POOL 0
 #endif
 
+#ifndef WASM_ENABLE_SPEC_TEST
+#define WASM_ENABLE_SPEC_TEST 0
+#endif
+
 /* Global heap pool size in bytes */
 #ifndef WASM_GLOBAL_HEAP_SIZE
 #if WASM_ENABLE_SPEC_TEST != 0
@@ -383,10 +387,6 @@
 #endif
 #define BLOCK_ADDR_CONFLICT_SIZE 2
 
-#ifndef WASM_ENABLE_SPEC_TEST
-#define WASM_ENABLE_SPEC_TEST 0
-#endif
-
 /* Default max thread num per cluster. Can be overwrite by
     wasm_runtime_set_max_thread_num */
 #define CLUSTER_MAX_THREAD_NUM 4