diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2f9be56..f55b820 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,7 @@ and this project follows the
 which is based on the major version of Backdrop CMS with a semantic version
 system for each contributed module, theme and layout.
 
-## [Unreleased] - 2026-01-30
+## [Unreleased] - 2026-02-18
 
 ### Added
 - An option for the `db-import` command to allow import from newer MariaDB
@@ -18,6 +18,8 @@ database or client does not support it.
 - The ability to download specified releases or branches of modules, themes,
 layout templates or Backdrop itself.
 - Command to convert database to UTF8MB4.
+- Defensive coding to prevent warnings if a module or theme exists in the
+`system` table but not in the file system.
 
 ### Fixed
 - Unhandled errors and warnings if commands run outside Backdrop root and/or
diff --git a/commands/projects.bee.inc b/commands/projects.bee.inc
index 487185e..03cfc96 100644
--- a/commands/projects.bee.inc
+++ b/commands/projects.bee.inc
@@ -214,7 +214,13 @@ function enable_bee_callback($arguments, $options) {
     switch ($type) {
       case 'module':
         // Get module info.
-        $module = $modules[$project];
+        $module = $modules[$project] ?? FALSE;
+        if (!$module) {
+          bee_message(bt("Project '!name' could not be found.", array(
+            '!name' => $project,
+          )), 'error');
+          continue 2;
+        }
         $name = $module->info['name'];
 
         // Check if already enabled.
@@ -260,7 +266,13 @@ function enable_bee_callback($arguments, $options) {
         break;
       case 'theme':
         // Get theme info.
-        $theme = $themes[$project];
+        $theme = $themes[$project] ?? FALSE;
+        if (!$theme) {
+          bee_message(bt("Project '!name' could not be found.", array(
+            '!name' => $project,
+          )), 'error');
+          continue 2;
+        }
         $name = $theme->info['name'];
 
         // Check if already enabled.