diff --git a/channels/remdesk/common/remdesk_common.c b/channels/remdesk/common/remdesk_common.c
index 854547798..a4600e764 100644
--- a/channels/remdesk/common/remdesk_common.c
+++ b/channels/remdesk/common/remdesk_common.c
@@ -23,7 +23,7 @@
 #include <freerdp/channels/log.h>
 #define TAG CHANNELS_TAG("remdesk.common")
 
-UINT remdesk_write_channel_header(wStream* s, REMDESK_CHANNEL_HEADER* header)
+UINT remdesk_write_channel_header(wStream* s, const REMDESK_CHANNEL_HEADER* header)
 {
 	WCHAR ChannelNameW[32] = { 0 };
 
diff --git a/channels/remdesk/common/remdesk_common.h b/channels/remdesk/common/remdesk_common.h
index 76dddd0f1..98bd26b8a 100644
--- a/channels/remdesk/common/remdesk_common.h
+++ b/channels/remdesk/common/remdesk_common.h
@@ -25,7 +25,7 @@
 
 #include <freerdp/channels/remdesk.h>
 
-FREERDP_LOCAL UINT remdesk_write_channel_header(wStream* s, REMDESK_CHANNEL_HEADER* header);
+FREERDP_LOCAL UINT remdesk_write_channel_header(wStream* s, const REMDESK_CHANNEL_HEADER* header);
 FREERDP_LOCAL UINT remdesk_write_ctl_header(wStream* s, const REMDESK_CTL_HEADER* ctlHeader);
 FREERDP_LOCAL UINT remdesk_read_channel_header(wStream* s, REMDESK_CHANNEL_HEADER* header);
 FREERDP_LOCAL UINT remdesk_prepare_ctl_header(REMDESK_CTL_HEADER* ctlHeader, UINT32 msgType,