diff --git a/xwords4/common/comms.c b/xwords4/common/comms.c
index 4835842c2..04c32f9ba 100644
--- a/xwords4/common/comms.c
+++ b/xwords4/common/comms.c
@@ -1066,7 +1066,9 @@ addToQueue( CommsCtxt* comms, MsgQueueElem* newMsgElem )
     }
     ++comms->queueLen;
     XP_ASSERT( comms->queueLen <= 128 ); /* reasonable limit in testing */
+#ifdef DEBUG
     printQueue( comms );
+#endif
 } /* addToQueue */
 
 #ifdef DEBUG
diff --git a/xwords4/linux/cursesmain.c b/xwords4/linux/cursesmain.c
index c3cd2eb44..84f73b0ec 100644
--- a/xwords4/linux/cursesmain.c
+++ b/xwords4/linux/cursesmain.c
@@ -1517,7 +1517,8 @@ curses_util_makeStreamFromAddr(XW_UtilCtxt* uc, XP_PlayerAddr channelNo )
 
 #ifdef XWFEATURE_CHAT
 static void
-curses_util_showChat( XW_UtilCtxt* uc, const XP_UCHAR* const msg )
+curses_util_showChat( XW_UtilCtxt* uc, 
+                      const XP_UCHAR* const XP_UNUSED_DBG(msg) )
 {
     CursesAppGlobals* globals = (CursesAppGlobals*)uc->closure;
     globals->nChatsSent = 0;