diff --git a/cmd/backup/main.go b/cmd/backup/main.go
index f36ee784..86c6f69a 100644
--- a/cmd/backup/main.go
+++ b/cmd/backup/main.go
@@ -64,7 +64,7 @@ func runScript(c *Config) (err error) {
 	}
 	defer func() {
 		derr := unlock()
-		if err != nil {
+		if err == nil && derr != nil {
 			err = fmt.Errorf("runScript: error releasing file lock: %w", derr)
 		}
 	}()