diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index a9c1932..a008e8f 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -23,7 +23,6 @@ services:
       DATABASE_NAME: "qrcode"
       DATABASE_USER: "qrcode"
       DATABASE_PASSWORD: "changeme"
-      DATABASE_PREFIX: ""
       DATABASE_CHARSET: "utf8"
     volumes:
       - ./data/app/config:/var/www/html/config
diff --git a/qrcode/config/config.php b/qrcode/config/config.php
index cea86f7..8312259 100755
--- a/qrcode/config/config.php
+++ b/qrcode/config/config.php
@@ -30,6 +30,5 @@ function getDbInstance() {
         'password' => DATABASE_PASSWORD,
         'db'=> DATABASE_NAME,
         'port' => DATABASE_PORT,
-        'prefix' => DATABASE_PREFIX,
         'charset' => DATABASE_CHARSET));
 }
diff --git a/qrcode/config/environment.php b/qrcode/config/environment.php
index 84b6604..9980cdd 100644
--- a/qrcode/config/environment.php
+++ b/qrcode/config/environment.php
@@ -33,4 +33,4 @@ if(is_string($docker_cid)) {
 |--------------------------------------------------------------------------
  */
 
-?>
\ No newline at end of file
+?>