diff --git a/internal/api/zone.go b/internal/api/zone.go
index 1a152a0..e1512d4 100644
--- a/internal/api/zone.go
+++ b/internal/api/zone.go
@@ -65,13 +65,14 @@ func ReceiveFile(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
+	defer file.Close() //nolint: errcheck
+
 	ok := validateContentType(file)
 	if !ok {
 		http.Error(w, "file must be text/plain", http.StatusUnsupportedMediaType)
 
 		return
 	}
-	defer file.Close() //nolint: errcheck
 
 	name := strings.Split(header.Filename, ".")