--- rxvt-unicode/src/ptytty_wrapper.C	2011/05/30 23:18:08	1.2
+++ rxvt-unicode/src/ptytty_wrapper.C	2011/05/30 23:22:18	1.3
@@ -3,6 +3,8 @@
 
 #define PTYTTY_NO_LIBCPP
 
+#define PTYTTY_REENTRANT 0
+
 #define PTYTTY_FATAL rxvt_fatal
 #define PTYTTY_WARN  rxvt_warn