diff --git a/code/nel/tools/nel_unit_test/CMakeLists.txt b/code/nel/tools/nel_unit_test/CMakeLists.txt
index 375503c56..b1219a4ee 100644
--- a/code/nel/tools/nel_unit_test/CMakeLists.txt
+++ b/code/nel/tools/nel_unit_test/CMakeLists.txt
@@ -8,6 +8,6 @@ TARGET_LINK_LIBRARIES(nel_unit_test ${CPPTEST_LIBRARIES} nelmisc nelnet nelligo)
 NL_DEFAULT_PROPS(nel_unit_test "Unit Tests")
 NL_ADD_RUNTIME_FLAGS(nel_unit_test)
 
-ADD_DEFINITIONS(${LIBXML2_DEFINITIONS} -DNEL_UNIT_BASE="\\"${PROJECT_SOURCE_DIR}/tools/nel_unit_test/\\"")
+ADD_DEFINITIONS(${LIBXML2_DEFINITIONS} -DNEL_UNIT_BASE="${PROJECT_SOURCE_DIR}/tools/nel_unit_test/")
 
 INSTALL(TARGETS nel_unit_test RUNTIME DESTINATION bin)