diff --git a/src/wal/test/waltest.c b/src/wal/test/waltest.c
index 7a473ed18c958afa8be3c5b94b04d2fd548a56fd..9a52a2ca833e671fe96acf6800f15e44fba292e3 100644
--- a/src/wal/test/waltest.c
+++ b/src/wal/test/waltest.c
@@ -76,7 +76,7 @@ int main(int argc, char *argv[]) {
 
   taosInitLog("wal.log", 100000, 10);
 
-  SWalCfg walCfg;
+  SWalCfg walCfg = {0};
   walCfg.walLevel = level;
   walCfg.keep = keep;