diff --git a/cmake/modules/DumuxDoxygen.cmake b/cmake/modules/DumuxDoxygen.cmake
index cc4e734bebaa7bca60d45b01956a06cfb7b118d3..5b36f63fbd55329397f11f7e9fc44587a7ec555b 100644
--- a/cmake/modules/DumuxDoxygen.cmake
+++ b/cmake/modules/DumuxDoxygen.cmake
@@ -3,7 +3,7 @@
 # make sure, that the doxygen links to todo list, bibliography, etc. are correct
 include_guard(GLOBAL)
 
-MACRO (add_dumux_doxygen_target)
+macro (add_dumux_doxygen_target)
   if(DOXYGEN_FOUND)
     add_doxygen_target()
     add_custom_target(doxygen_${ProjectName}_prebuild
@@ -13,4 +13,4 @@ MACRO (add_dumux_doxygen_target)
                        POST_BUILD
                        COMMAND ${CMAKE_SOURCE_DIR}/doc/doxygen/sanitizelinks.sh)
   endif()
-ENDMACRO ()
+endmacro ()