diff --git a/update-makefiles.sh b/update-makefiles.sh
index 842640f042..44c72b06ff 100755
--- a/update-makefiles.sh
+++ b/update-makefiles.sh
@@ -6,7 +6,7 @@ if [ ! -d hardware/interfaces ] ; then
 fi
 
 packages=$(pushd hardware/interfaces > /dev/null; \
-           find . -type f -name Android.mk -exec dirname {} \; | \
+           find . -type f -name \*.hal -exec dirname {} \; | sort -u | \
            cut -c3- | \
            awk -F'/' \
                 '{printf("android.hardware"); for(i=1;i<NF;i++){printf(".%s", $i);}; printf("@%s\n", $NF);}'; \