diff --git a/src/XAO/tests/CMakeLists.txt b/src/XAO/tests/CMakeLists.txt
index 244bccbaf..9a1a748e8 100644
--- a/src/XAO/tests/CMakeLists.txt
+++ b/src/XAO/tests/CMakeLists.txt
@@ -56,5 +56,6 @@ SET(TestXAO_SOURCES
 ADD_EXECUTABLE(TestXAO ${TestXAO_SOURCES})
 TARGET_LINK_LIBRARIES(TestXAO ${_link_LIBRARIES})
 ADD_TEST(TestXAO TestXAO)
+SET_TESTS_PROPERTIES(TestXAO PROPERTIES ENVIRONMENT "GEOM_SRC_DIR=${PROJECT_SOURCE_DIR}")
 
 INSTALL(TARGETS TestXAO DESTINATION ${SALOME_INSTALL_BINS})