diff --git a/tools/update-subtrees.cmd b/tools/update-subtrees.cmd
index 6facb94b6..b74eee670 100644
--- a/tools/update-subtrees.cmd
+++ b/tools/update-subtrees.cmd
@@ -1,3 +1,7 @@
 @echo off
-git subtree pull --prefix=libraries/ZWidget https://github.com/dpjudas/ZWidget master --squash
-git subtree pull --prefix=libraries/ZMusic https://github.com/ZDoom/ZMusic master --squash
+setlocal
+cd "%~dp0"
+for /f "delims=" %%I in ('where git.exe') do set GIT_PATH="%%~dpI"
+if errorlevel 1 echo "Unable to find git.exe!"
+if errorlevel 1 goto :eof
+%GIT_PATH%\..\bin\bash.exe update-subtrees.sh %*
diff --git a/tools/update-subtrees.sh b/tools/update-subtrees.sh
index 3c32492b9..459eabdbf 100755
--- a/tools/update-subtrees.sh
+++ b/tools/update-subtrees.sh
@@ -6,11 +6,11 @@ pull() {
 	if [[ "${1}" == "${2}" || "${1}" == "all" ]]
 	then
 		echo "fetching ${2}"
-		git subtree pull --prefix="${3}" "https://github.com/${4}" "${5}" --squash || exit
+		git subtree pull --prefix="${3}" "${4}" "${5}" --squash || exit
 	else
 		echo "${2} not specified, skipping"
 	fi
 }
 
-pull "$1" 'zwidget' 'libraries/ZWidget' 'dpjudas/ZWidget' 'master'
-pull "$1" 'zmusic'  'libraries/ZMusic'  'ZDoom/ZMusic'    'master'
+pull "$1" 'zwidget' 'libraries/ZWidget' 'https://github.com/dpjudas/ZWidget' 'master'
+pull "$1" 'zmusic'  'libraries/ZMusic'  'https://github.com/ZDoom/ZMusic'    'master'