diff --git a/mac/Build.txt b/mac/Build.txt
index b968bec45..36d10dda0 100644
--- a/mac/Build.txt
+++ b/mac/Build.txt
@@ -36,6 +36,7 @@ http://forum.audacityteam.org/viewtopic.php?p=303835#p303835 .
 
    cd wxWidgets-3.0.2
    patch -p0 -i <path to Audacity source>/mac/wxMac_additions/wxMac-3.0.2-fixes.patch .
+   patch -p0 -i <path to Audacity source>/mac/wxMac_additions/eventloops.patch .
 
 10) And finally build/install wxWidgets:
 
diff --git a/mac/wxMac_additions/eventloops.patch b/mac/wxMac_additions/eventloops.patch
new file mode 100644
index 000000000..a981f3d5e
--- /dev/null
+++ b/mac/wxMac_additions/eventloops.patch
@@ -0,0 +1,16 @@
+diff --git a/src/osx/core/evtloop_cf.cpp b/src/osx/core/evtloop_cf.cpp
+index 7e70dec..37b22b5 100644
+--- a/src/osx/core/evtloop_cf.cpp
++++ b/src/osx/core/evtloop_cf.cpp
+@@ -243,7 +243,7 @@ int wxCFEventLoop::DoProcessEvents()
+     }
+     else
+ #endif
+-        return DispatchTimeout( m_isInsideYield ? 0 : 1000 );
++        return DispatchTimeout( 0 );
+ }
+ 
+ bool wxCFEventLoop::Dispatch()
+-- 
+2.3.2 (Apple Git-55)
+