diff --git a/stackrc b/stackrc
index 0151672..4da481e 100644
--- a/stackrc
+++ b/stackrc
@@ -1,7 +1,7 @@
 # stackrc
 #
 # Find the other rc files
-RC_DIR=$(cd $(dirname "$BASH_SOURCE") && pwd)
+RC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
 
 # Destination path for installation
 DEST=/opt/stack