diff --git a/config b/config
index 84ccc3f..d39d036 100755
--- a/config
+++ b/config
@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
-_DIR="$(dirname $0)"
-export REDIS_IMAGE=${REDIS_IMAGE:="$(awk -F '[ :]' '{print $2}' $_DIR/Dockerfile)"}
-export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="$(awk -F '[ :]' '{print $3}' $_DIR/Dockerfile)"}
+_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+export REDIS_IMAGE=${REDIS_IMAGE:="$(awk -F '[ :]' '{print $2}' "${_DIR}/Dockerfile")"}
+export REDIS_IMAGE_VERSION=${REDIS_IMAGE_VERSION:="$(awk -F '[ :]' '{print $3}' "${_DIR}/Dockerfile")"}
 export REDIS_ROOT=${REDIS_ROOT:="$DOKKU_LIB_ROOT/services/redis"}
 export REDIS_HOST_ROOT=${REDIS_HOST_ROOT:=$REDIS_ROOT}
 
diff --git a/tests/setup.sh b/tests/setup.sh
index de1f91e..1eacc11 100644
--- a/tests/setup.sh
+++ b/tests/setup.sh
@@ -19,7 +19,9 @@ echo "Dokku version $DOKKU_VERSION"
 
 export DOKKU_LIB_ROOT="/var/lib/dokku"
 export DOKKU_PLUGINS_ROOT="$DOKKU_LIB_ROOT/plugins/available"
-source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/config"
+pushd "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")" >/dev/null
+source "config"
+popd >/dev/null
 sudo rm -rf "$DOKKU_PLUGINS_ROOT/$PLUGIN_COMMAND_PREFIX"
 sudo mkdir -p "$DOKKU_PLUGINS_ROOT/$PLUGIN_COMMAND_PREFIX" "$DOKKU_PLUGINS_ROOT/$PLUGIN_COMMAND_PREFIX/subcommands" "$DOKKU_PLUGINS_ROOT/$PLUGIN_COMMAND_PREFIX/scripts"
 sudo find ./ -maxdepth 1 -type f -exec cp '{}' "$DOKKU_PLUGINS_ROOT/$PLUGIN_COMMAND_PREFIX" \;