diff --git a/opm/parser/eclipse/CMakeLists.txt b/opm/parser/eclipse/CMakeLists.txt
index 444da761c..c7d36e1f5 100644
--- a/opm/parser/eclipse/CMakeLists.txt
+++ b/opm/parser/eclipse/CMakeLists.txt
@@ -173,7 +173,7 @@ add_executable( createDefaultKeywordList Parser/createDefaultKeywordList.cpp )
 target_link_libraries( createDefaultKeywordList buildParser opm-json ${Boost_LIBRARIES})
 
 add_custom_target( keywordlist ALL COMMAND createDefaultKeywordList ${PROJECT_SOURCE_DIR}/opm/parser/share/keywords ${PROJECT_BINARY_DIR}/generated-source/DefaultKeywordList.cpp ${PROJECT_BINARY_DIR}/generated-source/DefaultKeywordList.dump)
-
+add_custom_command(OUTPUT ${PROJECT_BINARY_DIR}/generated-source/DefaultKeywordList.cpp COMMAND true)
 
 #-----------------------------------------------------------------