diff --git a/src/main/java/ch/njol/skript/expressions/ExprDifficulty.java b/src/main/java/ch/njol/skript/expressions/ExprDifficulty.java
index 6669549c5c3..d943a95dc23 100644
--- a/src/main/java/ch/njol/skript/expressions/ExprDifficulty.java
+++ b/src/main/java/ch/njol/skript/expressions/ExprDifficulty.java
@@ -63,6 +63,8 @@ public void change(Event e, @Nullable Object[] delta, ChangeMode mode) {
 		Difficulty difficulty = (Difficulty) delta[0];
 		for (World world : getExpr().getArray(e)) {
 			world.setDifficulty(difficulty);
+			if (difficulty != Difficulty.PEACEFUL)
+				world.setSpawnFlags(true, world.getAllowAnimals()); // Force enable spawn monsters as changing difficulty won't change this by itself
 		}
 	}