diff --git a/internal/buffer/buffer.go b/internal/buffer/buffer.go
index 10762e94..f08f5323 100644
--- a/internal/buffer/buffer.go
+++ b/internal/buffer/buffer.go
@@ -586,6 +586,7 @@ func (b *Buffer) UpdateRules() {
 					continue
 				}
 				b.SyntaxDef = syndef
+				syntaxFile = f.Name()
 				break
 			}
 		}