diff --git a/src/gallium/frontends/va/picture.c b/src/gallium/frontends/va/picture.c
index bcd23b3ae8a..5f443d5c3f8 100644
--- a/src/gallium/frontends/va/picture.c
+++ b/src/gallium/frontends/va/picture.c
@@ -283,6 +283,7 @@ handleVAProtectedSliceDataBufferType(vlVaContext *context, vlVaBuffer *buf)
 
 	context->desc.base.decrypt_key = CALLOC(1, drm_key_size);
 	memcpy(context->desc.base.decrypt_key, encrypted_data, drm_key_size);
+	context->desc.base.key_size = drm_key_size;
 	context->desc.base.protected_playback = true;
 }
 
diff --git a/src/gallium/include/pipe/p_video_state.h b/src/gallium/include/pipe/p_video_state.h
index db34fce73ae..1a95dfb39d4 100755
--- a/src/gallium/include/pipe/p_video_state.h
+++ b/src/gallium/include/pipe/p_video_state.h
@@ -137,6 +137,7 @@ struct pipe_picture_desc
    enum pipe_video_entrypoint entry_point;
    bool protected_playback;
    uint8_t *decrypt_key;
+   uint32_t key_size;
    enum pipe_format input_format;
    enum pipe_format output_format;
 };