diff --git a/devstack/df-ext-services.sh b/devstack/df-ext-services.sh
index d27b800e5..97b2564d5 100755
--- a/devstack/df-ext-services.sh
+++ b/devstack/df-ext-services.sh
@@ -1,5 +1,8 @@
 #!/usr/bin/env bash
 
+# Locate devstack directory
+TOP_DIR=
+
 # Detect path for this script file
 DF_DIR=$(cd $(dirname "$0") && pwd)
 
diff --git a/devstack/plugin.sh b/devstack/plugin.sh
index 0a940977c..5d64bf2f3 100644
--- a/devstack/plugin.sh
+++ b/devstack/plugin.sh
@@ -128,6 +128,9 @@ function init_ovs {
 
 function install_df {
 
+    # Obtain devstack directory for df-ext-services.sh
+    sed -i "/^TOP_DIR=/cTOP_DIR=$TOP_DIR" $DEST/dragonflow/devstack/df-ext-services.sh
+
     nb_db_driver_install_server
 
     nb_db_driver_install_client