diff --git a/external/vulkancts/framework/vulkan/vkVulkan_c.inl b/external/vulkancts/framework/vulkan/vkVulkan_c.inl
index adbe676..7fedba6 100644
--- a/external/vulkancts/framework/vulkan/vkVulkan_c.inl
+++ b/external/vulkancts/framework/vulkan/vkVulkan_c.inl
@@ -949,6 +949,10 @@
         #define VK_NULL_HANDLE 0ULL
     #endif
 #endif
+#ifndef VK_NULL_HANDLE
+    #define VK_NULL_HANDLE 0
+#endif
+
 
 #ifndef VK_DEFINE_NON_DISPATCHABLE_HANDLE
     #if (VK_USE_64_BIT_PTR_DEFINES==1)
diff --git a/external/vulkancts/scripts/src/vulkan_core.h b/external/vulkancts/scripts/src/vulkan_core.h
index eff1ed0..06e389a 100644
--- a/external/vulkancts/scripts/src/vulkan_core.h
+++ b/external/vulkancts/scripts/src/vulkan_core.h
@@ -45,6 +45,10 @@
         #define VK_NULL_HANDLE 0ULL
     #endif
 #endif
+#ifndef VK_NULL_HANDLE
+    #define VK_NULL_HANDLE 0
+#endif
+
 
 #ifndef VK_DEFINE_NON_DISPATCHABLE_HANDLE
     #if (VK_USE_64_BIT_PTR_DEFINES==1)