diff --git a/genrule/genrule.go b/genrule/genrule.go
index ee4c503..cb741b3 100644
--- a/genrule/genrule.go
+++ b/genrule/genrule.go
@@ -198,6 +198,7 @@
 
 	if err != nil {
 		ctx.PropertyErrorf("cmd", "%s", err.Error())
+		return
 	}
 
 	ruleParams := blueprint.RuleParams{