--- a/libavutil/hwcontext_vulkan.c
+++ b/libavutil/hwcontext_vulkan.c
@@ -57,6 +57,13 @@
 #define CHECK_CU(x) FF_CUDA_CHECK_DL(cuda_cu, cu, x)
 #endif
 
+#ifndef VK_EXT_VIDEO_DECODE_H264_EXTENSION_NAME
+#define VK_EXT_VIDEO_DECODE_H264_EXTENSION_NAME "VK_EXT_video_decode_h264"
+#endif
+#ifndef VK_EXT_VIDEO_DECODE_H265_EXTENSION_NAME
+#define VK_EXT_VIDEO_DECODE_H265_EXTENSION_NAME "VK_EXT_video_decode_h265"
+#endif
+
 typedef struct VulkanQueueCtx {
     VkFence fence;
     VkQueue queue;