diff --git a/CMakeLists.txt b/CMakeLists.txt
index 63708829..da9aa6b7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -30,8 +30,6 @@ ecbuild_requires_macro_version( 2.7 )
 ecbuild_declare_project()
 
 ecbuild_enable_fortran( REQUIRED )
-set(CMAKE_CXX_STANDARD 11)
-set(CMAKE_CXX_STANDARD_REQUIRED ON)
 
 set( OPSINPUTS_LINKER_LANGUAGE CXX )