diff --git a/Nasal/globals.nas b/Nasal/globals.nas
index e296ab972..93e574a28 100644
--- a/Nasal/globals.nas
+++ b/Nasal/globals.nas
@@ -72,7 +72,12 @@ interpolate = func {
 setlistener = func {
     if(isa(arg[0], props.Node)) { arg[0] = arg[0]._g; }
     elsif(typeof(arg[0]) != "scalar") { return; }
-    _setlistener(arg[0], arg[1], size(arg) > 2 ? arg[2] : 0);
+    var id = _setlistener(arg[0], arg[1], size(arg) > 2 ? arg[2] : 0);
+    if(__.log_level <= 2) {
+        var c = caller(1);
+        print(sprintf("setting listener #%d in %s, line %s", id, c[2], c[3]))
+    }
+    return id;
 }