diff --git a/test/unittest/test_jsvm.cpp b/test/unittest/test_jsvm.cpp
index a5632b16bedd4e17d604a011ae1750854ca1f936..8a2e66516bbb3741e6710b26dd91a534fd6eeba4 100644
--- a/test/unittest/test_jsvm.cpp
+++ b/test/unittest/test_jsvm.cpp
@@ -1219,7 +1219,8 @@ static JSVM_Value Add(JSVM_Env env, JSVM_CallbackInfo info)
     size_t argc = 2;
     JSVM_Value args[2];
     OH_JSVM_GetCbInfo(env, info, &argc, args, NULL, NULL);
-    double num1, num2;
+    double num1 = 0.0;
+    double num2 = 0.0;
     OH_JSVM_GetValueDouble(env, args[0], &num1);
     OH_JSVM_GetValueDouble(env, args[1], &num2);
     JSVM_Value sum = nullptr;