diff --git a/checkin_notes b/checkin_notes
index cc91224787..9b30f638cd 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -2698,3 +2698,10 @@ Rom    29 Apr 2011
 
     samples/vboxwrapper/
         vbox.cpp, .h
+
+David  29 Apr 2011
+    - GUI RPC client library: increase request buffer size
+        from 4KB to 100B
+
+    lib/
+        gui_rpc_client.cpp
diff --git a/lib/gui_rpc_client.cpp b/lib/gui_rpc_client.cpp
index 4126573d33..6abdb15239 100644
--- a/lib/gui_rpc_client.cpp
+++ b/lib/gui_rpc_client.cpp
@@ -269,7 +269,7 @@ int RPC_CLIENT::authorize(const char* passwd) {
 }
 
 int RPC_CLIENT::send_request(const char* p) {
-    char buf[4096];
+    char buf[100000];
     sprintf(buf,
         "<boinc_gui_rpc_request>\n"
         "%s"