diff --git a/src/Analyzer/FunctionSecretArgumentsFinderTreeNode.h b/src/Analyzer/FunctionSecretArgumentsFinderTreeNode.h
index 8e8f56760e4..c598adfd98e 100644
--- a/src/Analyzer/FunctionSecretArgumentsFinderTreeNode.h
+++ b/src/Analyzer/FunctionSecretArgumentsFinderTreeNode.h
@@ -23,7 +23,7 @@ public:
             return nullptr;
         }
         bool isIdentifier() const override { return argument->as<IdentifierNode>(); }
-        bool tryGetString(String * res, bool allow_identifier = true) const override
+        bool tryGetString(String * res, bool allow_identifier) const override
         {
             if (const auto * literal = argument->as<ConstantNode>())
             {
diff --git a/src/Parsers/FunctionSecretArgumentsFinderAST.h b/src/Parsers/FunctionSecretArgumentsFinderAST.h
index 9430053d6a5..b89007c619d 100644
--- a/src/Parsers/FunctionSecretArgumentsFinderAST.h
+++ b/src/Parsers/FunctionSecretArgumentsFinderAST.h
@@ -23,7 +23,7 @@ public:
                 return nullptr;
             }
             bool isIdentifier() const override { return argument->as<ASTIdentifier>(); }
-            bool tryGetString(String * res, bool allow_identifier = true) const override
+            bool tryGetString(String * res, bool allow_identifier) const override
             {
                 if (const auto * literal = argument->as<ASTLiteral>())
                 {