diff --git a/src/Dictionaries/ExecutableDictionarySource.h b/src/Dictionaries/ExecutableDictionarySource.h
index b2aabf26323..f28d71ca5e3 100644
--- a/src/Dictionaries/ExecutableDictionarySource.h
+++ b/src/Dictionaries/ExecutableDictionarySource.h
@@ -14,7 +14,6 @@ namespace DB
 /// Allows loading dictionaries from executable
 class ExecutableDictionarySource final : public IDictionarySource
 {
-    friend class BlockInputStreamWithBackgroundThread;
 public:
     ExecutableDictionarySource(
         const DictionaryStructure & dict_struct_,