diff -r ee51d84aacbf -r a3fe30a2666b libpurple/protocols/mxit/markup.c
--- a/libpurple/protocols/mxit/markup.c	Wed Nov 12 02:21:47 2014 -0500
+++ b/libpurple/protocols/mxit/markup.c	Wed Nov 12 19:15:24 2014 -0500
@@ -592,7 +592,7 @@
 	purple_debug_info( MXIT_PLUGIN_ID, "read the length '%i'\n", em_size );
 #endif
 
-	if ( len - pos < em_size ) {
+	if ( len - pos < (gsize)em_size ) {
 		/* not enough bytes left in data! */
 		purple_debug_error( MXIT_PLUGIN_ID, "Invalid emoticon received from wapsite (data length too long)\n");
 		g_free( em_id );