diff --git a/CMakeLists.txt b/CMakeLists.txt
index 42f35741..138ac755 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -11,6 +11,10 @@ ecbuild_add_executable (
   )
 
 set (CMAKE_Fortran_FLAGS_RELEASE "${GEOS_Fortran_FLAGS_VECT}")
+if (GPU_PHYSICS)
+  set (CMAKE_Fortran_FLAGS_DEBUG "${CMAKE_Fortran_FLAGS_DEBUG} ${GEOS_Fortran_OpenACC_Flags_Offload_Libs}")
+  set (CMAKE_Fortran_FLAGS_RELEASE "${CMAKE_Fortran_FLAGS_RELEASE} ${GEOS_Fortran_OpenACC_Flags_Offload_Libs}")
+endif ()
 
 file (GLOB templates CONFIGURE_DEPENDS *.tmpl)