diff --git a/Tools/scripts/cygwin_build.sh b/Tools/scripts/cygwin_build.sh
index 62767fe8ea..55e8bf6f9d 100755
--- a/Tools/scripts/cygwin_build.sh
+++ b/Tools/scripts/cygwin_build.sh
@@ -8,6 +8,8 @@
 
 set -x
 
+git config --global --add safe.directory /cygdrive/d/a/ardupilot/ardupilot
+
 rm -rf artifacts
 mkdir artifacts