diff --git a/docker/dev/mtt-php72-apache-mariadb105/compose.yml b/docker/dev/mtt-php72-apache-mariadb105/compose.yml
index e34af9d..72605d5 100644
--- a/docker/dev/mtt-php72-apache-mariadb105/compose.yml
+++ b/docker/dev/mtt-php72-apache-mariadb105/compose.yml
@@ -17,7 +17,7 @@ services:
       - MTT_ENABLE_DEBUG=YES
       - MTT_DB_TYPE=mysql
       - MTT_DB_HOST=db
-      - MTT_DB=mytinytodo
+      - MTT_DB_NAME=mytinytodo
       - MTT_DB_USER=mtt
       - MTT_DB_PASSWORD=mtt
       - MTT_DB_PREFIX=mtt_
diff --git a/docker/dev/mtt-php80-apache-mariadb105/compose.yml b/docker/dev/mtt-php80-apache-mariadb105/compose.yml
index f928fff..ea16209 100644
--- a/docker/dev/mtt-php80-apache-mariadb105/compose.yml
+++ b/docker/dev/mtt-php80-apache-mariadb105/compose.yml
@@ -17,7 +17,7 @@ services:
       - MTT_ENABLE_DEBUG=YES
       - MTT_DB_TYPE=mysql
       - MTT_DB_HOST=db
-      - MTT_DB=mytinytodo
+      - MTT_DB_NAME=mytinytodo
       - MTT_DB_USER=mtt
       - MTT_DB_PASSWORD=mtt
       - MTT_DB_PREFIX=mtt_
diff --git a/docker/dev/mtt-php81-apache-mariadb108/compose.yml b/docker/dev/mtt-php81-apache-mariadb108/compose.yml
index edb2276..abd0c57 100644
--- a/docker/dev/mtt-php81-apache-mariadb108/compose.yml
+++ b/docker/dev/mtt-php81-apache-mariadb108/compose.yml
@@ -17,7 +17,7 @@ services:
       - MTT_ENABLE_DEBUG=YES
       - MTT_DB_TYPE=mysql
       - MTT_DB_HOST=db
-      - MTT_DB=mytinytodo
+      - MTT_DB_NAME=mytinytodo
       - MTT_DB_USER=mtt
       - MTT_DB_PASSWORD=mtt
       - MTT_DB_PREFIX=mtt_
diff --git a/src/docker-config.php b/src/docker-config.php
index efa0d70..0d2d954 100644
--- a/src/docker-config.php
+++ b/src/docker-config.php
@@ -5,7 +5,7 @@
 if (getenv('MTT_DB_TYPE') == 'mysql') {
     define("MTT_DB_TYPE", "mysql");
     define("MTT_DB_HOST", getenv('MTT_DB_HOST'));
-    define("MTT_DB_NAME", getenv('MTT_DB'));
+    define("MTT_DB_NAME", getenv('MTT_DB_NAME'));
     define("MTT_DB_USER", getenv('MTT_DB_USER'));
     define("MTT_DB_PASSWORD", getenv('MTT_DB_PASSWORD'));
     define("MTT_DB_PREFIX", getenv('MTT_DB_PREFIX'));
diff --git a/src/setup.php b/src/setup.php
index df198e5..8438839 100644
--- a/src/setup.php
+++ b/src/setup.php
@@ -520,7 +520,7 @@ function update_14_17(Database_Abstract $db, $dbtype)
         $db->ex("ALTER TABLE {$db->prefix}lists ADD `extra` TEXT");
 
         # increase the length of list and tag name
-        # (not applicable to sqlite cause it uses VARCHAR fields of eny length as TEXT)
+        # (not applicable to sqlite because it uses VARCHAR fields of eny length as TEXT)
         $db->ex("ALTER TABLE {$db->prefix}todolist CHANGE `tags` `tags` VARCHAR(2000) NOT NULL default '' ");
         $db->ex("ALTER TABLE {$db->prefix}tags CHANGE `name` `name` VARCHAR(250) NOT NULL default '' ");
         $db->ex("ALTER TABLE {$db->prefix}lists CHANGE `name` `name` VARCHAR(250) NOT NULL default '' ");