diff --git a/revid/Config.go b/revid/Config.go
index 841b83b3..e54b9286 100644
--- a/revid/Config.go
+++ b/revid/Config.go
@@ -220,7 +220,7 @@ func (config *Config) Validate(r *revid) error {
 	switch config.VerticalFlip {
 	case Yes:
 	case No:
-	case Nothing Defined:
+	case NothingDefined:
 		r.Log(Warning, "No vertical flip option defined, defaulting to not flipped!")
 		config.VerticalFlip = defaultVerticalFlip
 	default: