diff --git a/CMakeLists.txt b/CMakeLists.txt
index bc1300d0..5d14f7b3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -327,6 +327,7 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
   )  
   target_compile_options(${OBSW_NAME} PRIVATE ${WARNING_FLAGS})
   target_compile_options(${LIB_EIVE_MISSION} PRIVATE ${WARNING_FLAGS})
+  target_compile_options(${LIB_DUMMIES} PRIVATE ${WARNING_FLAGS})
 endif()
 
 set_target_properties(${OBSW_NAME} PROPERTIES OUTPUT_NAME ${OBSW_BIN_NAME})