diff --git a/src/collectable.cpp b/src/collectable.cpp
index 541e9ee..1d8bb60 100644
--- a/src/collectable.cpp
+++ b/src/collectable.cpp
@@ -103,7 +103,7 @@ void addCollectable(float x, float y, int type, int value, int life)
 	// Shield bonus is useless in Nightmare difficulty; give cash instead.
 	if (type == P_SHIELD)
 	{
-		if (currentGame.difficulty >= DIFFICULTY_NIGHTMARE)
+		if (currentGame.difficulty == DIFFICULTY_NIGHTMARE)
 		{
 			type = P_CASH;
 		}