diff --git a/src/js_native_api_v8.cpp b/src/js_native_api_v8.cpp
index 36d9fbb634080b712c8677460ce91c4c8ca10de2..8eb44b21a5093eba85ed5f320629a316519c7fd7 100644
--- a/src/js_native_api_v8.cpp
+++ b/src/js_native_api_v8.cpp
@@ -2924,7 +2924,7 @@ JSVM_Status OH_JSVM_CallFunction(JSVM_Env env,
      if (UNLIKELY(env->debugFlags)) {
         if (UNLIKELY(env->debugFlags & (1 << JSVM_SCOPE_CHECK))) {
             if (argv != nullptr) {
-                for (int i = 0; i <= argc; i++) {
+                for (size_t i = 0; i <= argc; i++) {
                     ADD_VAL_TO_SCOPE_CHECK(env, argv[i]);
                 }
             }
diff --git a/src/jsvm_dfx.h b/src/jsvm_dfx.h
index e4ce8b2a85b88dc7530b2f45a53992f0807c76b3..7aca9b4c49277f6a084a21460b4ccd32fbe5964e 100644
--- a/src/jsvm_dfx.h
+++ b/src/jsvm_dfx.h
@@ -97,10 +97,11 @@ public:
             scopeDepthToVal[scopeDepthToVal.size() - 1].push_back(val);
         } else {
             // Add JSVM value to parent depth
-            if (scopeDepthToVal.size() - 2 < 0) {
+            constexpr size_t depth = 2;
+            if (scopeDepthToVal.size() < depth) {
                 JSVM_FATAL("Not in any scope!");
             }
-            scopeDepthToVal[scopeDepthToVal.size() - 2].push_back(val);
+            scopeDepthToVal[scopeDepthToVal.size() - depth].push_back(val);
         }
     }