diff --git a/stepmania/src/MessageManager.cpp b/stepmania/src/MessageManager.cpp
index becf5d6154..57dd403753 100644
--- a/stepmania/src/MessageManager.cpp
+++ b/stepmania/src/MessageManager.cpp
@@ -23,7 +23,7 @@ static const char *MessageNames[] = {
 	"CurrentTrailP2Changed",
 	"GameplayLeadInChanged",
 	"EditStepsTypeChanged",
-	"EditCourseDifficulityChanged",
+	"EditCourseDifficultyChanged",
 	"EditSourceStepsChanged",
 	"EditSourceStepsTypeChanged",
 	"PreferredDifficutyP1Changed",
diff --git a/stepmania/src/MessageManager.h b/stepmania/src/MessageManager.h
index dc2417b169..ce58bf8ea9 100644
--- a/stepmania/src/MessageManager.h
+++ b/stepmania/src/MessageManager.h
@@ -18,7 +18,7 @@ enum Message
 	Message_CurrentTrailP2Changed,
 	Message_GameplayLeadInChanged,
 	Message_EditStepsTypeChanged,
-	Message_EditCourseDifficulityChanged,
+	Message_EditCourseDifficultyChanged,
 	Message_EditSourceStepsChanged,
 	Message_EditSourceStepsTypeChanged,
 	Message_PreferredDifficultyP1Changed,