diff --git a/src/common/file_util.h b/src/common/file_util.h
index 515c226fa0..caed8163a6 100644
--- a/src/common/file_util.h
+++ b/src/common/file_util.h
@@ -213,7 +213,7 @@ public:
         return WriteArray(str.c_str(), str.length());
     }
 
-    bool IsOpen() const const {
+    bool IsOpen() const {
         return nullptr != m_file;
     }