diff --git a/eucarc b/eucarc
index 2b0f7dd143..350235106c 100644
--- a/eucarc
+++ b/eucarc
@@ -13,7 +13,7 @@ if [[ -n "$2" ]]; then
 fi
 
 # Find the other rc files
-RC_DIR=$(cd $(dirname "$BASH_SOURCE") && pwd)
+RC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
 
 # Get user configuration
 source $RC_DIR/openrc
diff --git a/openrc b/openrc
index 3de7e3958f..5344d247bd 100644
--- a/openrc
+++ b/openrc
@@ -18,7 +18,7 @@ if [[ -n "$2" ]]; then
 fi
 
 # Find the other rc files
-RC_DIR=$(cd $(dirname "$BASH_SOURCE") && pwd)
+RC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
 
 # Import common functions
 source $RC_DIR/functions
diff --git a/stackrc b/stackrc
index 0151672c1d..4da481e98e 100644
--- a/stackrc
+++ b/stackrc
@@ -1,7 +1,7 @@
 # stackrc
 #
 # Find the other rc files
-RC_DIR=$(cd $(dirname "$BASH_SOURCE") && pwd)
+RC_DIR=$(cd $(dirname "${BASH_SOURCE:-$0}") && pwd)
 
 # Destination path for installation
 DEST=/opt/stack