diff --git a/src/micropolisj/engine/Micropolis.java b/src/micropolisj/engine/Micropolis.java
index 156c84d..19505ce 100644
--- a/src/micropolisj/engine/Micropolis.java
+++ b/src/micropolisj/engine/Micropolis.java
@@ -1924,7 +1924,7 @@ public class Micropolis
 		cityTax = dis.readShort();              //56
 		taxEffect = cityTax;
 		int simSpeedAsInt = dis.readShort();
-		if (simSpeedAsInt >= 0 || simSpeedAsInt <= 4)
+		if (simSpeedAsInt >= 0 && simSpeedAsInt <= 4)
 			simSpeed = Speed.values()[simSpeedAsInt];
 		else
 			simSpeed = Speed.NORMAL;