diff --git a/libavutil/hwcontext_d3d11va.c b/libavutil/hwcontext_d3d11va.c
index e30c8fc238..6b8a7e0acf 100644
--- a/libavutil/hwcontext_d3d11va.c
+++ b/libavutil/hwcontext_d3d11va.c
@@ -201,7 +201,7 @@ static AVBufferRef *wrap_texture_buf(AVHWFramesContext *ctx, ID3D11Texture2D *te
     desc->texture = tex;
     desc->index   = index;
 
-    buf = av_buffer_create((uint8_t *)desc, sizeof(desc), free_texture, tex, 0);
+    buf = av_buffer_create((uint8_t *)desc, sizeof(*desc), free_texture, tex, 0);
     if (!buf) {
         ID3D11Texture2D_Release(tex);
         av_free(desc);