diff --git a/wp-config.php b/wp-config.php
index c1e139b..6d73299 100644
--- a/wp-config.php
+++ b/wp-config.php
@@ -43,7 +43,9 @@
 	}
 }
 
-$table_prefix = getenv( 'TABLE_PREFIX' ) ?: 'wp_';
+if ( ! isset( $table_prefix ) ) {
+	$table_prefix = 'wp_';
+}
 
 /*
  * DB constants are expected to be provided by other modules, as they are