diff --git a/src/Functions/extract.cpp b/src/Functions/extract.cpp
index cc3c97840bc..0296602d205 100644
--- a/src/Functions/extract.cpp
+++ b/src/Functions/extract.cpp
@@ -67,7 +67,7 @@ using FunctionExtract = FunctionsStringSearchToString<ExtractImpl, NameExtract>;
 
 void registerFunctionExtract(FunctionFactory & factory)
 {
-    factory.registerFunction<FunctionExtract>(FunctionFactory::CaseInsensitive);
+    factory.registerFunction<FunctionExtract>();
 }
 
 }