diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 789c83ac..7c6376e3 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -84,6 +84,7 @@ else()
     )
 
   set(BUILD_TESTING OFF)
+  set(CMAKE_C_COMPILER_WORKS ON)
   FetchContent_MakeAvailable(eigen3)
 endif()