diff --git a/core/sys_config.php b/core/sys_config.php
index 98d2a3eb..dc8f366b 100644
--- a/core/sys_config.php
+++ b/core/sys_config.php
@@ -9,8 +9,7 @@ namespace Shimmie2;
  * Shimmie will set the values to their defaults
  *
  * All of these can be over-ridden by placing a 'define' in
- * data/config/shimmie.conf.php, or by setting an environment
- * variable SHM_{$name} (eg SHM_DATABASE_DSN)
+ * data/config/shimmie.conf.php.
  *
  * Do NOT change them in this file. These are the defaults only!
  *
@@ -21,10 +20,6 @@ namespace Shimmie2;
 function _d(string $name, mixed $value): void
 {
     if (!defined($name)) {
-        $env = getenv("SHM_{$name}");
-        if ($env !== false) {
-            $value = json_decode($env) ?? $env;
-        }
         define($name, $value);
     }
 }