diff --git a/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java b/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
index af2e046c9..c3267d93a 100644
--- a/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
+++ b/core/src/net/sf/openrocket/rocketcomponent/RocketComponent.java
@@ -1377,7 +1377,7 @@ public abstract class RocketComponent implements ChangeSource, Cloneable, Iterab
 			massSubtotal += rc.getSectionMass();
 		}
 		
-		return massSubtotal;
+		return massSubtotal * getInstanceCount();
 	}
 	
 	/**