diff --git a/revid/Config.go b/revid/Config.go
index 5230b4d4..89b9003c 100644
--- a/revid/Config.go
+++ b/revid/Config.go
@@ -275,7 +275,7 @@ func (config *Config) Validate(r *revid) error {
 		}
 	}
 
-	if config.Rotate = "" {
+	if config.Rotate == "" {
 		r.Log(Warning, fmt.Sprintf("No rotate defined defaulting to: %v", defaultRotate) )
 		r.config.Rotate = defaultRotate
 	} else {