diff --git a/tests/core/CMakeLists.txt b/tests/core/CMakeLists.txt
index d4b4b2f6b0d0cc5094f5e630cff2d9d2adfa8c49..3a01bde48c3fcd582107f503bffd3834de7b7e3f 100644
--- a/tests/core/CMakeLists.txt
+++ b/tests/core/CMakeLists.txt
@@ -221,7 +221,7 @@ waLBerla_compile_test( FILES VersionTest.cpp )
 waLBerla_execute_test( NAME VersionTest )
 
 if ( WALBERLA_CXX_COMPILER_IS_INTEL AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "20.0" )
-  waLBerla_compile_test( FILES VariantTest )
+  waLBerla_compile_test( FILES VariantTest.cpp )
   waLBerla_execute_test( NAME VariantTest )
 endif()