diff --git a/src/commands/CommandManager.cpp b/src/commands/CommandManager.cpp
index a4a437f26..ae86a0742 100644
--- a/src/commands/CommandManager.cpp
+++ b/src/commands/CommandManager.cpp
@@ -509,6 +509,8 @@ void CommandManager::SetMaxList()
    mMaxListOnly.Add( "Alt+Shift+F6" );
    mMaxListOnly.Add( "Alt+F6" );
 
+   std::transform( mMaxListOnly.begin(), mMaxListOnly.end(), mMaxListOnly.begin(),
+                   KeyStringNormalize );
    mMaxListOnly.Sort();
 }
 
diff --git a/src/prefs/KeyConfigPrefs.cpp b/src/prefs/KeyConfigPrefs.cpp
index ce9b0b281..e8826ccf4 100644
--- a/src/prefs/KeyConfigPrefs.cpp
+++ b/src/prefs/KeyConfigPrefs.cpp
@@ -454,6 +454,8 @@ void KeyConfigPrefs::FilterKeys( wxArrayString & arr )
    MaxListOnly.Add( "Alt+Shift+F6" );
    MaxListOnly.Add( "Alt+F6" );
 
+   std::transform( MaxListOnly.begin(), MaxListOnly.end(), MaxListOnly.begin(),
+                   KeyStringNormalize );
    MaxListOnly.Sort();
    // Remove items that are in MaxList.
    for (size_t i = 0; i < arr.GetCount(); i++) {