diff --git a/lib/libcoolstream/dmx_cs.h b/lib/libcoolstream/dmx_cs.h
index 35108ca29..7f9138ab0 100644
--- a/lib/libcoolstream/dmx_cs.h
+++ b/lib/libcoolstream/dmx_cs.h
@@ -67,7 +67,7 @@ class cDemux
 		void SetSyncMode(AVSYNC_TYPE mode);
 		void * getBuffer();
 		void * getChannel();
-		const DMX_CHANNEL_TYPE getChannelType(void);
+		DMX_CHANNEL_TYPE getChannelType(void);
 		void addPid(unsigned short Pid);
 		void getSTC(int64_t * STC);
 		//