diff --git a/packages/ponylang/0.39.0/build.sh b/packages/ponylang/0.39.0/build.sh
index 9566c10..cc10f33 100755
--- a/packages/ponylang/0.39.0/build.sh
+++ b/packages/ponylang/0.39.0/build.sh
@@ -22,4 +22,5 @@ make build
 # Install pony into `$PREFIX`.
 make prefix="$PREFIX" install
 
+cd ..
 rm -rf ponyc
\ No newline at end of file