diff --git a/checkin_notes b/checkin_notes
index f61c1e981c..ef304a9db2 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -3328,8 +3328,7 @@ David  April 21 2008
             view_profile.php
 
 Rom    April 21 2008 (HEAD)
-    - Tag for 6.1.16 release, all platforms
-      boinc_core_release_6_1_16
+    - Bump version to 6.1.16.
 
     /
         configure.ac
@@ -3340,3 +3339,12 @@ David  April 21 2008
 
     client/
         hostinfo_unix.C
+
+Charlie April 22 2008
+    - MGR: fix a compiler warning (size_t is unsigned).
+    - Tag for 6.1.16 release, all platforms
+      boinc_core_release_6_1_16
+
+    clientgui/
+        AdvancedFrame.cpp
+
diff --git a/clientgui/AdvancedFrame.cpp b/clientgui/AdvancedFrame.cpp
index cd27a7b1b7..4207ab3f8a 100644
--- a/clientgui/AdvancedFrame.cpp
+++ b/clientgui/AdvancedFrame.cpp
@@ -1189,11 +1189,11 @@ void CAdvancedFrame::OnSelectComputer(wxCommandEvent& WXUNUSED(event)) {
             // Connect to the remote machine
             wxString sHost = dlg.m_ComputerNameCtrl->GetValue(); 
             long lPort = GUI_RPC_PORT; 
-            size_t iPos = sHost.find(_(":")); 
+            int iPos = sHost.find(_(":")); 
             if (iPos != -1) { 
-                wxString sPort = sHost.substr(iPos + 1); 
+                wxString sPort = sHost.substr((size_t)iPos + 1); 
                 if (!sPort.ToLong(&lPort)) lPort = GUI_RPC_PORT; 
-                sHost.erase(iPos); 
+                sHost.erase((size_t)iPos); 
             } 
             lRetVal = pDoc->Connect(
                 sHost,