diff --git a/pagure/ui/issues.py b/pagure/ui/issues.py
index afd5bea..51676b6 100644
--- a/pagure/ui/issues.py
+++ b/pagure/ui/issues.py
@@ -472,13 +472,10 @@ def update_tags(repo, username=None, namespace=None):
         ]
 
         # Uniquify and order preserving
-        seen = set()
         colors = [
             col.strip()
             for col in flask.request.form.getlist('tag_color')
             if col.strip()
-            and col.strip() not in seen
-            and not seen.add(col.strip())
         ]
 
         color_pattern = re.compile('^#\w{3,6}$')
diff --git a/tests/test_pagure_flask_ui_issues.py b/tests/test_pagure_flask_ui_issues.py
index 15f78a7..fe46be1 100644
--- a/tests/test_pagure_flask_ui_issues.py
+++ b/tests/test_pagure_flask_ui_issues.py
@@ -3364,8 +3364,8 @@ class PagureFlaskIssuestests(tests.Modeltests):
             self.assertIn(
                 '<span class="label label-info" style="background-color:'
                 '#003cff">blue</span>\n'
-                '            &nbsp;<span class="text-muted">'
-                '</span>', output.data)
+                '            &nbsp;<span class="text-muted"></span>',
+                output.data)
             self.assertIn(
                 '<input type="hidden" value="blue" name="tag" />',
                 output.data)
@@ -3407,9 +3407,40 @@ class PagureFlaskIssuestests(tests.Modeltests):
                 '<input type="hidden" value="red" name="tag" />',
                 output.data)
 
+            # Valid query - Two tags of the same color
+            data = {
+                'tag': ['red2', 'red3'],
+                'tag_color': ['#ff0000', '#ff0000'],
+                'tag_description': ['', ''],
+                '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(
+                '<span class="label label-info" style="background-color:'
+                '#ff0000">red2</span>\n'
+                '            &nbsp;<span class="text-muted"></span>',
+                output.data)
+            self.assertIn(
+                '<input type="hidden" value="green" name="tag" />',
+                output.data)
+            self.assertIn(
+                '<span class="label label-info" style="background-color:'
+                '#ff0000">red3</span>\n'
+                '            &nbsp;<span class="text-muted"></span>',
+                output.data)
+            self.assertIn(
+                '<input type="hidden" value="red" name="tag" />',
+                output.data)
+
         # After update, list tags
         tags = pagure.lib.get_tags_of_project(self.session, repo)
-        self.assertEqual([tag.tag for tag in tags], ['blue', 'green', 'red'])
+        self.assertEqual(
+            sorted([tag.tag for tag in tags]),
+            ['blue', 'green', 'red', 'red2', 'red3'])
 
     @patch('pagure.lib.git.update_git')
     @patch('pagure.lib.notify.send_email')