diff --git a/docker-compose.yml b/docker-compose.yml
index b354018..24b4e89 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -143,8 +143,8 @@ services:
   db-ui:
     image: ${DB_UI_IMAGE}${DB_UI_VERSION}
     environment:
-      POSTGRES_HOST: db
-      POSTGRES_PORT: 5432
+      POSTGRES_HOST: ${DB_HOST}
+      POSTGRES_PORT: ${DB_PORT}
       POSTGRES_USER: ${DB_USER_ADMIN}
       POSTGRES_PASSWORD: ${DB_PASSWORD_ADMIN}
       POSTGRES_DB: ${DB_NAME2}
@@ -203,18 +203,18 @@ services:
   backend:
     image: ${PORTAL_BACKEND_IMAGE}${PORTAL_BACKEND_VERSION}
     environment:
-      PORTAL_DB_URL: jdbc:postgresql://db:5432/${DB_NAME4}
-      PORTAL_DB_SERVER: db:5432
+      PORTAL_DB_URL: jdbc:postgresql://${DB_HOST}:${DB_PORT}/${DB_NAME4}
+      PORTAL_DB_SERVER: ${DB_HOST}:${DB_PORT}
       PORTAL_DB_USER: ${DB_USER4}
       PORTAL_DB_PASSWORD: ${DB_PASSWORD4}
       PORTAL_DB_SCHEMA: public # Stable Config
-      META_DB_URL: jdbc:postgresql://db:5432/${DB_NAME1}
-      META_DB_SERVER: db:5432
+      META_DB_URL: jdbc:postgresql://${DB_HOST}:${DB_PORT}/${DB_NAME1}
+      META_DB_SERVER: ${DB_HOST}:${DB_PORT}
       META_DB_USER: ${DB_USER1}
       META_DB_PASSWORD: ${DB_PASSWORD1}
       META_DB_SCHEMA: public # Stable Config
-      FEATURES_DB_URL: jdbc:postgresql://db:5432/${DB_NAME2}
-      FEATURES_DB_SERVER: db:5432
+      FEATURES_DB_URL: jdbc:postgresql://${DB_HOST}:${DB_PORT}/${DB_NAME2}
+      FEATURES_DB_SERVER: ${DB_HOST}:${DB_PORT}
       FEATURES_DB_USER: ${DB_USER2}
       FEATURES_DB_PASSWORD: ${DB_PASSWORD2}
       FEATURES_DB_SCHEMA: public # Stable Config
diff --git a/settings.default.sh b/settings.default.sh
index 03fd894..11b8d40 100644
--- a/settings.default.sh
+++ b/settings.default.sh
@@ -15,8 +15,10 @@
 # Service Parameters
 : ${DB_IMAGE:="hbpmip/postgresraw"}
 : ${DB_VERSION:=":v1.3"}
-: ${DB_HOST:="db-published"} # External hostname, if exposed
-: ${DB_PORT:="31432"} # External port, if exposed
+# If you want to expose the DB, you have to adapt the values below, as well
+# as uncomment the port section in the docker-compose.yml file.
+: ${DB_HOST:="db"} # Internal hostname, if NOT exposed, defined in docker-compose.yml
+: ${DB_PORT:="5432"} # Internal port, if NOT exposed, default PostgreSQL port
 : ${DB_DATA:="${PWD}/postgres"}
 : ${DB_DATASETS:="${PWD}/datasets"}
 : ${DB_USER_ADMIN:="postgres"}
diff --git a/woken/application.conf.in b/woken/application.conf.in
index 72a5349..f2ffee2 100644
--- a/woken/application.conf.in
+++ b/woken/application.conf.in
@@ -104,12 +104,12 @@ db {
   woken {
     jdbc_driver = "org.postgresql.Driver"
     jdbc_jar_path = "/usr/lib/R/libraries/postgresql-9.4-1201.jdbc41.jar"
-    jdbc_url = "jdbc:postgresql://db:5432/DB_NAME3"
+    jdbc_url = "jdbc:postgresql://DB_HOST:DB_PORT/DB_NAME3"
     jdbc_user = "DB_USER3"
     jdbc_password = "DB_PASSWORD3"
 
-    host = "db"
-    port = 5432
+    host = "DB_HOST"
+    port = DB_PORT
     user = "DB_USER3"
     password = "DB_PASSWORD3"
   }
@@ -117,12 +117,12 @@ db {
   features {
     jdbc_driver = "org.postgresql.Driver"
     jdbc_jar_path = "/usr/lib/R/libraries/postgresql-9.4-1201.jdbc41.jar"
-    jdbc_url = "jdbc:postgresql://db:5432/DB_NAME2"
+    jdbc_url = "jdbc:postgresql://DB_HOST:DB_PORT/DB_NAME2"
     jdbc_user = "DB_USER2"
     jdbc_password = "DB_PASSWORD2"
 
-    host = "db"
-    port = 5432
+    host = "DB_HOST"
+    port = DB_PORT
     user = "DB_USER2"
     password = "DB_PASSWORD2"
   }
@@ -130,12 +130,12 @@ db {
   metadata {
     jdbc_driver = "org.postgresql.Driver"
     jdbc_jar_path = "postgresql-9.4-1201.jdbc41.jar"
-    jdbc_url = "jdbc:postgresql://db:5432/DB_NAME1"
+    jdbc_url = "jdbc:postgresql://DB_HOST:DB_PORT/DB_NAME1"
     jdbc_user = "DB_USER1"
     jdbc_password = "DB_PASSWORD1"
 
-    host = "db"
-    port = 5432
+    host = "DB_HOST"
+    port = DB_PORT
     user = "DB_USER1"
     password = "DB_PASSWORD1"
   }