diff --git a/build/buildbot/config/TBITCWXBUILDBOT.xml b/build/buildbot/config/TBITCWXBUILDBOT.xml
index 756c26a99a..1437c5e3dd 100644
--- a/build/buildbot/config/TBITCWXBUILDBOT.xml
+++ b/build/buildbot/config/TBITCWXBUILDBOT.xml
@@ -33,14 +33,20 @@
     </steps>
 </build>
 
+<!--
+    Commented out 64-bit builds as no 64-bit compiler at the moment.
+
+    If you're re-enabling them take out the space between the hyphens of the
+    configure options below, e.g. take out the space from "- -host=".
+
 <build>
     <name>MinGW x86_64 trunk</name>
     <builddir>tbitcwxbuildbot_mingw64_trunk</builddir>
-    <!--scheduler>trunk_quick</scheduler-->
+    <scheduler>trunk_quick</scheduler>
     <steps>
         <checkout/>
-        <configure options="--host=amd64-mingw32msvc
-                            --with-cppunit-prefix=/usr/local/amd64-mingw32msvc"/>
+        <configure options="- -host=amd64-mingw32msvc
+                            - -with-cppunit-prefix=/usr/local/amd64-mingw32msvc"/>
         <compile-all/>
     </steps>
 </build>
@@ -48,13 +54,15 @@
 <build>
     <name>MinGW x86_64 stable</name>
     <builddir>tbitcwxbuildbot_mingw64_stable</builddir>
-    <!--scheduler>daily_0600</scheduler-->
+    <scheduler>daily_0600</scheduler>
     <steps>
         <checkout branch="{$STABLE_BRANCH}"/>
-        <configure options="--host=amd64-mingw32msvc
-                            --with-cppunit-prefix=/usr/local/amd64-mingw32msvc"/>
+        <configure options="- -host=amd64-mingw32msvc
+                            - -with-cppunit-prefix=/usr/local/amd64-mingw32msvc"/>
         <compile-all utils="false"/>
     </steps>
 </build>
 
+-->
+
 </bot>