diff --git a/util.go b/util.go
index 64fda9f..7d69f3c 100644
--- a/util.go
+++ b/util.go
@@ -7,8 +7,11 @@ import (
 	"strings"
 )
 
-func check(e error) {
+func check(e error, optMsg ...string) {
 	if e != nil {
+		if (len(optMsg) > 0) {
+			ExitFail("%s - %s", e, strings.Join(optMsg, " "))
+		}
 		ExitFail("%s", e)
 	}
 }