diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 4ca32dcd0..30009dcd6 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1163,6 +1163,7 @@ Style/ColonMethodCall:
 
 Style/CombinableLoops:
   Exclude:
+    - 'app/models/wiki_annotate.rb'
     - 'lib/redmine/default_data/loader.rb'
 
 # Cop supports --auto-correct.
diff --git a/app/models/wiki_annotate.rb b/app/models/wiki_annotate.rb
index c0411e3a6..3be95ca0e 100644
--- a/app/models/wiki_annotate.rb
+++ b/app/models/wiki_annotate.rb
@@ -37,6 +37,9 @@ class WikiAnnotate
             @lines[positions[line]][1] = current.author
           end
         end
+      end
+      d.each_slice(3) do |s|
+        sign, line = s[0], s[1]
         if sign == '-'
           positions.insert(line, -1)
         else