diff --git a/cmake/paths_compilation_installation.cmake b/cmake/paths_compilation_installation.cmake
index fdddade45..863ac6aff 100644
--- a/cmake/paths_compilation_installation.cmake
+++ b/cmake/paths_compilation_installation.cmake
@@ -67,19 +67,3 @@ if(WIN32)
   # Liste des ressources Windows
 #RC_FILE = qelectrotech.rc
 endif()
-
-if(${QET_COMMON_COLLECTION_PATH})
-  add_definitions(-DQET_COMMON_COLLECTION_PATH=${QET_COMMON_COLLECTION_PATH})
-endif()
-if(${QQET_COMMON_TBT_PATH})
-  add_definitions(-DQET_COMMON_TBT_PATH=${QET_COMMON_TBT_PATH})
-endif()
-if(${DQET_LANG_PATH_RELATIVE_TO_BINARY_PATH})
-  add_definitions(-DQET_LANG_PATH_RELATIVE_TO_BINARY_PATH)
-endif()
-if(${QET_LANG_PATH})
-  add_definitions(-DQET_LANG_PATH=${QET_LANG_PATH})
-endif()
-if(${QET_EXAMPLES_PATH})
-  add_definitions(-DQET_EXAMPLES_PATH=${QET_EXAMPLES_PATH})
-endif()