diff --git a/services/identity_manager/src/mock/identity_common_mock.c b/services/identity_manager/src/mock/identity_common_mock.c
index 892db72f..c7272fa4 100644
--- a/services/identity_manager/src/mock/identity_common_mock.c
+++ b/services/identity_manager/src/mock/identity_common_mock.c
@@ -29,7 +29,7 @@ void DestroyIdentityInfo(IdentityInfo *info)
 IdentityInfoVec CreateIdentityInfoVec(void)
 {
     IdentityInfoVec v;
-    (void)memset_s(&v, sizeof(IdentityInfo), 0, sizeof(IdentityInfo));
+    (void)memset_s(&v, sizeof(IdentityInfoVec), 0, sizeof(IdentityInfoVec));
     return v;
 }