diff --git a/level_zero/tools/source/sysman/linux/fs_access.h b/level_zero/tools/source/sysman/linux/fs_access.h
index a6431bb983..badfb99f53 100644
--- a/level_zero/tools/source/sysman/linux/fs_access.h
+++ b/level_zero/tools/source/sysman/linux/fs_access.h
@@ -105,7 +105,7 @@ class SysfsAccess : protected FsAccess {
     ze_result_t write(const std::string file, std::vector<std::string> val);
 
     MOCKABLE_VIRTUAL ze_result_t scanDirEntries(const std::string path, std::vector<std::string> &list);
-    ze_result_t readSymLink(const std::string path, std::string &buf) override;
+    MOCKABLE_VIRTUAL ze_result_t readSymLink(const std::string path, std::string &buf) override;
     ze_result_t getRealPath(const std::string path, std::string &buf) override;
     MOCKABLE_VIRTUAL ze_result_t bindDevice(const std::string device);
     MOCKABLE_VIRTUAL ze_result_t unbindDevice(const std::string device);
diff --git a/level_zero/tools/test/unit_tests/sources/sysman/ras/linux/CMakeLists.txt b/level_zero/tools/test/unit_tests/sources/sysman/ras/linux/CMakeLists.txt
index 4538671cf3..89bfefa155 100644
--- a/level_zero/tools/test/unit_tests/sources/sysman/ras/linux/CMakeLists.txt
+++ b/level_zero/tools/test/unit_tests/sources/sysman/ras/linux/CMakeLists.txt
@@ -12,4 +12,5 @@ if(UNIX)
                  ${CMAKE_CURRENT_SOURCE_DIR}${BRANCH_DIR_SUFFIX}mock_fs_ras.h
   )
 endif()
+add_subdirectories()