diff --git a/pagure/ui/issues.py b/pagure/ui/issues.py
index f5e6085..393e773 100644
--- a/pagure/ui/issues.py
+++ b/pagure/ui/issues.py
@@ -483,9 +483,21 @@ def update_tags(repo, username=None, namespace=None):
                 error = True
 
         if not (len(tags) == len(colors) == len(tag_descriptions)):
-            flask.flash(
-                'tags, tag descriptions and tag colors are not of the same length', 'error')
             error = True
+            # store the lengths because we are going to use them a lot
+            len_tags = len(tags)
+            len_tag_descriptions = len(tag_descriptions)
+            len_colors = len(colors)
+            error_message = 'Error: Incomplete request. '
+
+            if len_colors > len_tags or len_tag_descriptions > len_tags:
+                error_message += 'One or more tag fields missing.'
+            elif len_colors < len_tags:
+                error_message += 'One or more tag color fields missing.'
+            elif len_tag_descriptions < len_tags:
+                error_message += 'One or more tag description fields missing.'
+
+            flask.flash(error_message, 'error')
 
         if not error:
             for idx, tag in enumerate(tags):
diff --git a/tests/test_pagure_flask_ui_issues.py b/tests/test_pagure_flask_ui_issues.py
index d7b169d..3451282 100644
--- a/tests/test_pagure_flask_ui_issues.py
+++ b/tests/test_pagure_flask_ui_issues.py
@@ -2061,6 +2061,25 @@ class PagureFlaskIssuestests(tests.Modeltests):
                 '        <ul class="list-group list-group-flush">'
                 '\n        </ul>', output.data)
 
+            # Inconsistent length tags (missing tag field)
+            data = {
+                'tag': 'red',
+                'tag_description': ['lorem ipsum', 'foo bar'],
+                'tag_color': ['#ff0000', '#003cff'],
+                'csrf_token': csrf_token,
+            }
+            output = self.app.post(
+                '/test/update/tags', data=data, follow_redirects=True)
+            self.assertEqual(output.status_code, 200)
+            self.assertIn(
+                '<title>Settings - test - Pagure</title>', output.data)
+            self.assertIn(
+                '</button>\n                      Error: Incomplete request. '
+                'One or more tag fields missing.', output.data)
+            self.assertIn(
+                '        <ul class="list-group list-group-flush">'
+                '\n        </ul>', output.data)
+
             # Inconsistent length color
             data = {
                 'tag': ['red', 'blue'],
@@ -2078,8 +2097,8 @@ class PagureFlaskIssuestests(tests.Modeltests):
                 'Color: red does not match the expected pattern',
                 output.data)
             self.assertIn(
-                '</button>\n                      tags, tag descriptions and'
-                ' tag colors are not of the same length', output.data)
+                '</button>\n                      Error: Incomplete request. '
+                'One or more tag color fields missing.', output.data)
             self.assertIn(
                 '        <ul class="list-group list-group-flush">'
                 '\n        </ul>', output.data)
@@ -2097,8 +2116,8 @@ class PagureFlaskIssuestests(tests.Modeltests):
             self.assertIn(
                 '<title>Settings - test - Pagure</title>', output.data)
             self.assertIn(
-                '</button>\n                      tags, tag descriptions and'
-                ' tag colors are not of the same length', output.data)
+                '</button>\n                      Error: Incomplete request. '
+                'One or more tag description fields missing.', output.data)
             self.assertIn(
                 '        <ul class="list-group list-group-flush">'
                 '\n        </ul>', output.data)