diff --git a/libpurgeablemem/cpp/src/purgeable_mem_base.cpp b/libpurgeablemem/cpp/src/purgeable_mem_base.cpp
index 4d4808acfed9bd7ea7494effc87b7604ce3386d6..5fe2900bc45aca141c162b5fb375d1bb3e3bbf27 100644
--- a/libpurgeablemem/cpp/src/purgeable_mem_base.cpp
+++ b/libpurgeablemem/cpp/src/purgeable_mem_base.cpp
@@ -58,7 +58,6 @@ bool PurgeableMemBase::BeginRead()
         return false;
     }
 
-    bool succ = false;
     bool ret = false;
     int tryTimes = 0;
 
@@ -75,7 +74,7 @@ bool PurgeableMemBase::BeginRead()
             break;
         }
 
-        succ = BuildContent();
+        bool succ = BuildContent();
         if (succ) {
             AfterRebuildSucc();
         }