--- a/eric6/Plugins/VcsPlugins/vcsMercurial/GpgExtension/HgGpgSignaturesDialog.py	Thu Mar 04 17:44:41 2021 +0100
+++ b/eric6/Plugins/VcsPlugins/vcsMercurial/GpgExtension/HgGpgSignaturesDialog.py	Thu Mar 04 17:48:09 2021 +0100
@@ -202,12 +202,13 @@
         )
         self.vcs.getExtensionObject("gpg").hgGpgVerifySignatures(rev)
     
-    @pyqtSlot(str)
-    def on_categoryCombo_activated(self, txt):
+    @pyqtSlot(int)
+    def on_categoryCombo_activated(self, index):
         """
         Private slot called, when a new filter category is selected.
         
-        @param txt text of the selected category (string)
+        @param index index of the selected entry
+        @type int
         """
         self.__filterSignatures()