diff --git a/pkg/configfilearg/parser.go b/pkg/configfilearg/parser.go
index 181369ab1e28..50377be9c30f 100644
--- a/pkg/configfilearg/parser.go
+++ b/pkg/configfilearg/parser.go
@@ -90,7 +90,7 @@ func (p *Parser) stripInvalidFlags(command string, args []string) ([]string, err
 		if validFlags[mArg] {
 			result = append(result, arg)
 		} else {
-			logrus.Warnf("Unknown flag %s found in config.yaml, skipping\n", arg)
+			logrus.Warnf("Unknown flag %s found in config.yaml, skipping\n", strings.Split(arg, "=")[0])
 		}
 	}
 	return result, nil