diff --git a/src/Functions/intDiv.cpp b/src/Functions/intDiv.cpp
index 25c21f8439c..54e7f9ed5e1 100644
--- a/src/Functions/intDiv.cpp
+++ b/src/Functions/intDiv.cpp
@@ -88,6 +88,9 @@ struct DivideIntegralByConstantImpl
 
 }
 
+namespace impl_
+{
+
 template <> struct BinaryOperationImpl<UInt64, UInt8, DivideIntegralImpl<UInt64, UInt8>> : DivideIntegralByConstantImpl<UInt64, UInt8> {};
 template <> struct BinaryOperationImpl<UInt64, UInt16, DivideIntegralImpl<UInt64, UInt16>> : DivideIntegralByConstantImpl<UInt64, UInt16> {};
 template <> struct BinaryOperationImpl<UInt64, UInt32, DivideIntegralImpl<UInt64, UInt32>> : DivideIntegralByConstantImpl<UInt64, UInt32> {};
@@ -108,6 +111,7 @@ template <> struct BinaryOperationImpl<Int32, Int16, DivideIntegralImpl<Int32, I
 template <> struct BinaryOperationImpl<Int32, Int32, DivideIntegralImpl<Int32, Int32>> : DivideIntegralByConstantImpl<Int32, Int32> {};
 template <> struct BinaryOperationImpl<Int32, Int64, DivideIntegralImpl<Int32, Int64>> : DivideIntegralByConstantImpl<Int32, Int64> {};
 
+}
 
 struct NameIntDiv { static constexpr auto name = "intDiv"; };
 using FunctionIntDiv = BinaryArithmeticOverloadResolver<DivideIntegralImpl, NameIntDiv, false>;