diff --git a/drivers/media/video/exynos/mfc/s5p_mfc.c b/drivers/media/video/exynos/mfc/s5p_mfc.c
index 499e889..b68d30a 100644
--- a/drivers/media/video/exynos/mfc/s5p_mfc.c
+++ b/drivers/media/video/exynos/mfc/s5p_mfc.c
@@ -589,7 +589,7 @@
 	if (dec->is_dynamic_dpb) {
 		switch (dst_frame_status) {
 		case S5P_FIMV_DEC_STATUS_DECODING_ONLY:
-			dec->dynamic_used = mfc_get_dec_used_flag();
+			dec->dynamic_used |= mfc_get_dec_used_flag();
 			/* Fall through */
 		case S5P_FIMV_DEC_STATUS_DECODING_DISPLAY:
 			s5p_mfc_handle_ref_frame(ctx);