diff --git a/build.go b/build.go
index 4572d28..57d8432 100644
--- a/build.go
+++ b/build.go
@@ -53,7 +53,12 @@ func main() {
 }
 
 func runCmd(args ...string) error {
-	cmd := exec.Command(args[0], args[1:]...)
+	var cmd *exec.Cmd
+	if len(args) > 1 {
+		cmd = exec.Command(args[0], args[1:]...)
+	} else {
+		cmd = exec.Command(args[0])
+	}
 
 	cmd.Stdin = os.Stdin
 	cmd.Stdout = os.Stdout