diff --git a/qutebrowser/widgets/browser.py b/qutebrowser/widgets/browser.py
index 0c0c7faa0..abdfcfa2d 100644
--- a/qutebrowser/widgets/browser.py
+++ b/qutebrowser/widgets/browser.py
@@ -336,7 +336,8 @@ class TabbedBrowser(TabWidget):
         sender = self.sender()
         if type(sender) != type(self.currentWidget()):
             # FIXME why does this happen?
-            logging.warn('Got a signal to _filter_signals not by a tab!')
+            logging.warn('Got signal "{}" by {} which is no tab!'.format(
+                         dbgstr, sender))
             return
         sender.signal_cache[signal.signal] = (signal, args)
         if self.currentWidget() == sender: