diff --git a/clientgui/BOINCListCtrl.cpp b/clientgui/BOINCListCtrl.cpp
index 1e61bf42c6..0b1dd14452 100644
--- a/clientgui/BOINCListCtrl.cpp
+++ b/clientgui/BOINCListCtrl.cpp
@@ -242,7 +242,7 @@ void CBOINCListCtrl::DrawProgressBars()
     wxClientDC dc(this);
     m_bProgressBarEventPending = false;
 #else
-    wxClientDC dc(GetMainWin());   // Available only in wxGenericListCtrl
+    wxWindowDC dc(GetMainWin());   // Available only in wxGenericListCtrl
 #endif
 
     if (progressColumn < 0) {
diff --git a/mac_build/buildWxMac.sh b/mac_build/buildWxMac.sh
index 7d874e1668..51d942659c 100644
--- a/mac_build/buildWxMac.sh
+++ b/mac_build/buildWxMac.sh
@@ -30,6 +30,7 @@
 # Patch to fix crash on OS 10.5 or 10.6 when built on OS 10.7+ 2/18/14
 # Enable wxWidgets asserts in Release build 3/6/14
 # Disable all wxWidgets debug support in Release build (revert 3/6/14 change) 5/29/14
+# Fix wxListCtrl flicker when resizing columns in wxCocoa 3.0.0 6/13/14
 #
 ## This script requires OS 10.6 or later
 ##
@@ -117,6 +118,30 @@ fi
 
 echo ""
 
+# Patch wxWidgets-3.0.0/src/generic/listctrl.cpp to eliminate flicker when resizing columns
+if [ ! -f src/generic/listctrl.cpp.orig ]; then
+    cat >> /tmp/listctrl_cpp_diff << ENDOFFILE
+--- /Volumes/Cheer/BOINC_GIT/wxWidgets-3.0.0/src/generic/listctrl.cpp	2013-11-11 05:10:39.000000000 -0800
++++ /Volumes/Cheer/BOINC_GIT/wxWidgets-3.0.0/src/generic/listctrl_patched.cpp	2014-06-13 03:44:28.000000000 -0700
+@@ -3632,7 +3632,7 @@
+ {
+     const int lineHeight = GetLineHeight();
+ 
+-    wxClientDC dc( this );
++    wxWindowDC dc( this );
+     dc.SetFont( GetFont() );
+ 
+     const size_t count = GetItemCount();
+ENDOFFILE
+    patch -bfi /tmp/listctrl_cpp_diff src/generic/listctrl.cpp
+    rm -f /tmp/listctrl_cpp_diff
+else
+    echo "src/generic/listctrl.cpp already patched"
+fi
+
+echo ""
+
+
 
 if [ "$1" = "-clean" ]; then
   doclean="clean "