diff --git a/CMakeLists.txt b/CMakeLists.txt
index a313673fe0..fd65ffde4b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -688,7 +688,7 @@ if(NOT MSVC)
       set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-noexcept-type") # Added for gtest
     endif()
   endif()
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror -Werror=vla")
 
   if(USE_SANITIZE_UB)
     check_cxx_compiler_flag(-fsanitize=undefined COMPILER_SUPPORTS_UNDEFINED_BEHAVIOR_SANITIZER)
diff --git a/level_zero/tools/test/black_box_tests/zello_sysman.cpp b/level_zero/tools/test/black_box_tests/zello_sysman.cpp
index 41584181d2..11504ffaa8 100644
--- a/level_zero/tools/test/black_box_tests/zello_sysman.cpp
+++ b/level_zero/tools/test/black_box_tests/zello_sysman.cpp
@@ -825,9 +825,9 @@ void testSysmanFirmware(ze_device_handle_t &device, std::string imagePath) {
             std::cout << "firmware version = " << fwProperties.version << std::endl;
         }
         if (imagePath.size() != 0 && imgSize > 0) {
-            char img[imgSize];
-            imageFile.read(img, imgSize);
-            VALIDATECALL(zesFirmwareFlash(handle, img, static_cast<uint32_t>(imgSize)));
+            std::vector<char> img(imgSize);
+            imageFile.read(img.data(), imgSize);
+            VALIDATECALL(zesFirmwareFlash(handle, img.data(), static_cast<uint32_t>(imgSize)));
 
             VALIDATECALL(zesFirmwareGetProperties(handle, &fwProperties));
             if (verbose) {