diff --git a/prism-examples/tandem/tandem.sm b/prism-examples/tandem/tandem.sm
index e8922287..9b68ea4a 100644
--- a/prism-examples/tandem/tandem.sm
+++ b/prism-examples/tandem/tandem.sm
@@ -33,8 +33,6 @@ module serverM
 endmodule
 
 // reward - number of customers in network
-rewards
-	
+rewards "customers"
 	true : sc + sm;
-	
 endrewards