diff --git a/XIproto.h b/XIproto.h
index d4dfbca..049a3d1 100644
--- a/XIproto.h
+++ b/XIproto.h
@@ -75,6 +75,7 @@ SOFTWARE.
 
 #define IEVENTS		18
 #define IERRORS		5
+#define IREQUESTS	45
 
 #define CLIENT_REQ		1