diff --git a/doc/salome/examples/CMakeLists.txt b/doc/salome/examples/CMakeLists.txt
index 840f83984..7c5428283 100644
--- a/doc/salome/examples/CMakeLists.txt
+++ b/doc/salome/examples/CMakeLists.txt
@@ -135,7 +135,7 @@ FOREACH(test ${GOOD_TESTS})
   GET_FILENAME_COMPONENT(testname ${test} NAME_WE)
   ADD_TEST(NAME ${testname} 
            COMMAND ${PYTHON_EXECUTABLE} -B ${CMAKE_SOURCE_DIR}/doc/salome/examples/testme.py ${CMAKE_CURRENT_SOURCE_DIR}/${test})
-  SET_TESTS_PROPERTIES(${testname} PROPERTIES ENVIRONMENT ${tests_env})                   
+  SET_TESTS_PROPERTIES(${testname} PROPERTIES ENVIRONMENT "${tests_env}")                   
 ENDFOREACH()
 
 # install Python scripts