Index: /applications/editors/josm/i18n/i18n.pl
===================================================================
--- /applications/editors/josm/i18n/i18n.pl	(revision 26338)
+++ /applications/editors/josm/i18n/i18n.pl	(revision 26339)
@@ -214,6 +214,6 @@
   if($v =~ /'/)
   {
-    #warn "JAVA translation issue for language $la: Mismatching single quotes:\nTranslated text: $tr\n";
-    #$error = 1;
+    warn "JAVA translation issue for language $la: Mismatching single quotes:\nTranslated text: $tr\n";
+    $error = 1;
   }
   # Test two - check if there are {..} which should not be