diff --git a/dmon.c b/dmon.c
index 0f37c49..40e8226 100644
--- a/dmon.c
+++ b/dmon.c
@@ -89,7 +89,7 @@ JSValue js_dmon_unwatch(JSContext *js, JSValue self, int argc, JSValue *argv)
 JSValue js_dmon_poll(JSContext *js, JSValueConst this_val, int argc, JSValueConst *argv) {
   FileEvent event;
   while (dequeue_event(&event)) {
-    if (!JS_IsFunction(js, argv[0])) continue;
+    if (!JS_IsFunction(argv[0])) continue;
     JSValue jsevent = JS_NewObject(js);
     JSValue action;
     switch(event.action) {