diff --git a/src/Workspaces/Core/Portable/NamingStyles/NamingStyle.cs b/src/Workspaces/Core/Portable/NamingStyles/NamingStyle.cs
index d6c3539f6ac13ef54624c354d5a6bcd1e3e44827..fc29e90a2112bcad9a88785978c808a45f1d7152 100644
--- a/src/Workspaces/Core/Portable/NamingStyles/NamingStyle.cs
+++ b/src/Workspaces/Core/Portable/NamingStyles/NamingStyle.cs
@@ -230,7 +230,7 @@ private bool CheckAllUpper(string name, TextSpan nameSpan, out string reason)
         private bool CheckAllLower(string name, TextSpan nameSpan, out string reason)
             => CheckAllWords(
                 name, nameSpan, s_wordIsAllLowerCase,
-                WorkspacesResources.These_words_cannot_contain_lower_case_characters_colon_0, out reason);
+                WorkspacesResources.These_words_cannot_contain_upper_case_characters_colon_0, out reason);
 
         private bool CheckFirstAndRestWords(
             string name, TextSpan nameSpan,