diff --git a/internal/cnf/loader.go b/internal/cnf/loader.go
index 21ff420..64319bf 100644
--- a/internal/cnf/loader.go
+++ b/internal/cnf/loader.go
@@ -64,8 +64,6 @@ func Load(path string) (ConfigurationFormat, error) {
 
 func loadFromExtension(ext string) ConfigurationFormat {
 
-	var confFormat ConfigurationFormat
-
 	// select configuration or fail if not known
 	switch ext {
 	case "json":