diff --git a/common/rfb/CConnection.cxx b/common/rfb/CConnection.cxx
index af84226..d6960dd 100644
--- a/common/rfb/CConnection.cxx
+++ b/common/rfb/CConnection.cxx
@@ -143,7 +143,7 @@
 
 void CConnection::processVersionMsg()
 {
-  char verStr[13];
+  char verStr[27]; // FIXME: gcc has some bug in format-overflow
   int majorVersion;
   int minorVersion;