diff --git a/src/XAO/tests/CMakeLists.txt b/src/XAO/tests/CMakeLists.txt
index 15c9a5f3b..7bad36cea 100644
--- a/src/XAO/tests/CMakeLists.txt
+++ b/src/XAO/tests/CMakeLists.txt
@@ -60,7 +60,7 @@ SALOME_GENERATE_TESTS_ENVIRONMENT(tests_env)
 SET(TEST_INSTALL_DIRECTORY ${SALOME_INSTALL_SCRIPT_SCRIPTS}/test/xao)
 
 ADD_TEST(TestXAO TestXAO)
-SET_TESTS_PROPERTIES(TestXAO PROPERTIES ENVIRONMENT "XAO_DATA_DIR=${TEST_INSTALL_DIRECTORY}/data;${tests_env}")
+SET_TESTS_PROPERTIES(TestXAO PROPERTIES ENVIRONMENT "XAO_DATA_DIR=${CMAKE_CURRENT_SOURCE_DIR}/data;${tests_env}")
 
 INSTALL(TARGETS TestXAO DESTINATION ${SALOME_INSTALL_BINS})