diff --git a/update_depot_tools b/update_depot_tools
index 95cd4c6a9..c59f4ad42 100755
--- a/update_depot_tools
+++ b/update_depot_tools
@@ -40,7 +40,7 @@ function test_git_svn {
 
 # Get the current SVN revision.
 get_svn_revision() {
-  echo `svn info | awk '{ if ($1 == "Revision:") { print $2 }}'`
+  echo `svn info "$base_dir" | awk '{ if ($1 == "Revision:") { print $2 }}'`
 }
 
 # Update git checkouts prior the cygwin check, we don't want to use msysgit.