diff --git a/camlibs/ptp2/ptp-pack.c b/camlibs/ptp2/ptp-pack.c
index 5aa13705b..2f43c6f65 100644
--- a/camlibs/ptp2/ptp-pack.c
+++ b/camlibs/ptp2/ptp-pack.c
@@ -2299,6 +2299,7 @@ ptp_unpack_CANON_changes (PTPParams *params, unsigned char* data, unsigned int d
 				case PTP_DPC_CANON_EOS_ModelID:
 				case PTP_DPC_CANON_EOS_LensID:
 				case PTP_DPC_CANON_EOS_StroboFiring:
+				case PTP_DPC_CANON_EOS_StroboDispState:
 				case PTP_DPC_CANON_EOS_AFSelectFocusArea:
 				case PTP_DPC_CANON_EOS_ContinousAFMode:
 				case PTP_DPC_CANON_EOS_MirrorUpSetting: