diff --git a/config b/config
index 1d5622d..1712fc3 100644
--- a/config
+++ b/config
@@ -1,10 +1,10 @@
 #!/usr/bin/env bash
 export MYSQL_IMAGE=${MYSQL_IMAGE:="mysql"}
 export MYSQL_IMAGE_VERSION=${MYSQL_IMAGE_VERSION:="5.6.26"}
-export MYSQL_ROOT=/var/lib/dokku/services/mysql
+export MYSQL_ROOT=${MYSQL_ROOT:="/var/lib/dokku/services/mysql"}
 
 export PLUGIN_COMMAND_PREFIX="mysql"
-export PLUGIN_DATA_ROOT=${PLUGIN_DATA_ROOT:="$MYSQL_ROOT"}
+export PLUGIN_DATA_ROOT=$MYSQL_ROOT
 export PLUGIN_DATASTORE_PORTS=(3306)
 export PLUGIN_DEFAULT_ALIAS="DATABASE"
 export PLUGIN_IMAGE=$MYSQL_IMAGE
diff --git a/tests/test_helper.bash b/tests/test_helper.bash
index 180fbc2..c825249 100644
--- a/tests/test_helper.bash
+++ b/tests/test_helper.bash
@@ -8,7 +8,8 @@ export PLUGIN_PATH="$DOKKU_ROOT/plugins"
 export PLUGIN_ENABLED_PATH="$PLUGIN_PATH"
 export PLUGIN_AVAILABLE_PATH="$PLUGIN_PATH"
 export PLUGIN_CORE_AVAILABLE_PATH="$PLUGIN_PATH"
-export PLUGIN_DATA_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/fixtures"
+export MYSQL_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/fixtures"
+export PLUGIN_DATA_ROOT="$MYSQL_ROOT"
 
 mkdir -p $PLUGIN_DATA_ROOT
 rm -rf "${PLUGIN_DATA_ROOT:?}"/*