diff --git a/dbms/src/DataStreams/ConvertColumnWithDictionaryToFullBlockInputStream.h b/dbms/src/DataStreams/ConvertColumnWithDictionaryToFullBlockInputStream.h
index 86799783449..5abde1323a3 100644
--- a/dbms/src/DataStreams/ConvertColumnWithDictionaryToFullBlockInputStream.h
+++ b/dbms/src/DataStreams/ConvertColumnWithDictionaryToFullBlockInputStream.h
@@ -15,7 +15,7 @@ namespace DB
 class ConvertColumnWithDictionaryToFullBlockInputStream : public IProfilingBlockInputStream
 {
 public:
-    ConvertColumnWithDictionaryToFullBlockInputStream(BlockInputStreamPtr input)
+    ConvertColumnWithDictionaryToFullBlockInputStream(const BlockInputStreamPtr & input)
     {
         children.push_back(input);
     }