diff --git a/CMakeLists.txt b/CMakeLists.txt
index ed90b4677..e5f40f51b 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -241,10 +241,10 @@ MARK_AS_ADVANCED(SALOME_INSTALL_AMCONFIG_LOCAL SALOME_INSTALL_DOC)
 MARK_AS_ADVANCED(SALOME_SMESH_INSTALL_RES_DATA SALOME_SMESH_INSTALL_PLUGINS)
 
 # Accumulate environment variables for SMESH module
-SALOME_ACCUMULATE_ENVIRONMENT(PYTHONPATH ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_BINS}
-                                         ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_PYTHON}
-                                         ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_PYTHON_SHARED})
-SALOME_ACCUMULATE_ENVIRONMENT(LD_LIBRARY_PATH ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_LIBS}) 
+SALOME_ACCUMULATE_ENVIRONMENT(PYTHONPATH NOCHECK ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_BINS}
+                                                 ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_PYTHON}
+                                                 ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_PYTHON_SHARED})
+SALOME_ACCUMULATE_ENVIRONMENT(LD_LIBRARY_PATH NOCHECK ${CMAKE_INSTALL_PREFIX}/${SALOME_INSTALL_LIBS}) 
 
 # Sources 
 # ========