diff --git a/service/ptos/ex/pool.c b/service/ptos/ex/pool.c
index 15601e6..08e4ca0 100644
--- a/service/ptos/ex/pool.c
+++ b/service/ptos/ex/pool.c
@@ -48,9 +48,9 @@ PoolComputeLevelIndex(USIZE ByteCount)
     }
 
     /* Subtract the right side */
-    TmpCount -= POOL_MIN_LOG2 + 1;
-    TmpCount %= POOL_LEVEL_MAX;
-    return TmpCount;
+    Log2Sum -= POOL_MIN_LOG2 + 1;
+    Log2Sum %= POOL_LEVEL_MAX;
+    return Log2Sum;
 }
 
 /*