diff --git a/common/rfb/CMsgHandler.cxx b/common/rfb/CMsgHandler.cxx
index bbc1176..4b33852 100644
--- a/common/rfb/CMsgHandler.cxx
+++ b/common/rfb/CMsgHandler.cxx
@@ -80,7 +80,7 @@
 {
 }
 
-void CMsgHandler::serverCutText(const char* str, int len)
+void CMsgHandler::serverCutText(const char* str, rdr::U32 len)
 {
 }