diff --git a/parsers/caves.py b/parsers/caves.py
index 5b6d674..4607b22 100644
--- a/parsers/caves.py
+++ b/parsers/caves.py
@@ -648,18 +648,18 @@ def read_cave(filename, cave=None):
                     print(message)
             primary = False
             
-    def check_slug(areacode, kataster_number, unofficial_number):
+    def check_slug(areacode, kataster_number, unofficial_number, url):
         if kataster_number:
             if slug == f"{areacode}-{kataster_number}":
                 return
-            message = f" ! Cave Slug incorrect (kataster): '{slug}' != '{areacode}-{kataster_number}' in file {filename}"
+            message = f" ! Cave Slug incorrect (kataster): '{slug}' != '{areacode}-{kataster_number}' {url=} in file {filename}"
         else:
             if slug == f"{areacode}-{unofficial_number}":
                 return
-            message = f" ! Cave Slug incorrect (unofficial): '{slug}' != '{areacode}-{unofficial_number}' in file {filename}"
+            message = f" ! Cave Slug incorrect (unofficial): '{slug}' != '{areacode}-{unofficial_number}' {url=} in file {filename}"
             if slug.lower() == f"{areacode}-{unofficial_number.lower()}":
-                message = f" ! Cave Slug capitalisation incorrect (unofficial): {slug} != {areacode}-{unofficial_number} in file {filename}"
-        DataIssue.objects.create(parser="caves", message=message, url=f"{cave.url}_cave_edit/")
+                message = f" ! Cave Slug capitalisation incorrect (unofficial): '{slug}' != '{areacode}-{unofficial_number}' {url=} in file {filename}"
+        DataIssue.objects.create(parser="caves", message=message, url=f"{cave.slug}_cave_edit/")
         print(message)
          
     global entrances_xslug
@@ -773,7 +773,7 @@ def read_cave(filename, cave=None):
     cave.description_file=description_file[0]
     cave.url=url[0]
 
-    check_slug(cave.areacode,cave.kataster_number, cave.unofficial_number)
+    check_slug(cave.areacode,cave.kataster_number, cave.unofficial_number, cave.url)
            
     entrances = getXML(cavecontents, "entrance", context=context)
     do_entrances()