diff --git a/core/hakmem_shared_pool_release.c b/core/hakmem_shared_pool_release.c
index de1c6cb5..90f9e7bb 100644
--- a/core/hakmem_shared_pool_release.c
+++ b/core/hakmem_shared_pool_release.c
@@ -2,6 +2,7 @@
 #include "hakmem_debug_master.h"
 #include "box/ss_slab_meta_box.h"
 #include "box/ss_hot_cold_box.h"
+#include "hakmem_env_cache.h"  // Priority-2: ENV cache
 
 #include <stdlib.h>
 #include <stdio.h>
@@ -45,11 +46,8 @@ shared_pool_release_slab(SuperSlab* ss, int slab_idx)
 
     // Debug logging
 #if !HAKMEM_BUILD_RELEASE
-    static int dbg = -1;
-    if (__builtin_expect(dbg == -1, 0)) {
-        const char* e = getenv("HAKMEM_SS_FREE_DEBUG");
-        dbg = (e && *e && *e != '0') ? 1 : 0;
-    }
+    // Priority-2: Use cached ENV
+    int dbg = HAK_ENV_SS_FREE_DEBUG();
 #else
     static const int dbg = 0;
 #endif