diff --git a/app/lib/link_checker/uri_checker/problem.rb b/app/lib/link_checker/uri_checker/problem.rb
index 354bff2d..2629cd90 100644
--- a/app/lib/link_checker/uri_checker/problem.rb
+++ b/app/lib/link_checker/uri_checker/problem.rb
@@ -24,7 +24,7 @@ def get_string(symbol)
       return nil if symbol.nil?
 
       symbols = [
-        :"#{symbol}.#{from_redirect ? "redirect" : "singular"}",
+        :"#{symbol}.#{from_redirect ? 'redirect' : 'singular'}",
         symbol,
       ]