diff --git a/ext/v8/v8_func.cpp b/ext/v8/v8_func.cpp
index 118a998..337c7c9 100644
--- a/ext/v8/v8_func.cpp
+++ b/ext/v8/v8_func.cpp
@@ -36,7 +36,7 @@ namespace {
     Handle<Array> args = V8_Ref_Get<Array>(arguments);
     int argc = args->Length();
     Handle<Value> argv[argc];
-    for (uint i = 0; i < argc; i++) {
+    for (int i = 0; i < argc; i++) {
       argv[i] = args->Get(i);
     }
     return rr_v82rb(function->NewInstance(argc, argv));