diff --git a/CMakeLists.txt b/CMakeLists.txt
index e0a5e11f..e011caf6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.0)
 project(torchscatter)
 set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_CXX_STANDARD_REQUIRED)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(TORCHSCATTER_VERSION 2.1.2)
 
 option(WITH_CUDA "Enable CUDA support" OFF)