diff --git a/build-support/factor.cmd b/build-support/factor.cmd
index d53c22c74c..b14f4dbe1e 100644
--- a/build-support/factor.cmd
+++ b/build-support/factor.cmd
@@ -46,7 +46,7 @@ echo Deleting staging images from temp/...
 del temp\staging.*.image
 
 echo Updating working copy from %_git_branch%...
-call git pull http://factorcode.org/git/factor.git %_git_branch%
+call git pull git://factorcode.org/git/factor.git %_git_branch%
 if errorlevel 1 goto fail
 
 echo Building vm...