diff --git a/src/node/ext/call.cc b/src/node/ext/call.cc
index d62ce2aa6cdd886ea9b27ae2e4fc337077a34d36..705c80ffc1d3a60dec3ec2eca3d23f5627bcb6ff 100644
--- a/src/node/ext/call.cc
+++ b/src/node/ext/call.cc
@@ -516,7 +516,7 @@ NAN_METHOD(Call::New) {
         propagate_flags = args[5]->Uint32Value();
       } else if (!(args[5]->IsUndefined() || args[5]->IsNull())) {
         return NanThrowTypeError(
-            "Call's fifth argument must be propagate flags, if provided");
+            "Call's sixth argument must be propagate flags, if provided");
       }
       Handle<Object> channel_object = args[0]->ToObject();
       Channel *channel = ObjectWrap::Unwrap<Channel>(channel_object);