diff --git a/environment_indicator.module b/environment_indicator.module
index 7533f61..02e7df8 100644
--- a/environment_indicator.module
+++ b/environment_indicator.module
@@ -463,10 +463,11 @@ function environment_indicator_get_active() {
  *   The altered environment.
  */
 function environment_indicator_alter_and_cache($env) {
-  drupal_alter('environment_indicator_matched_indicator', $env);
-
-  // Save it to the db cache.
-  cache_set('environment_indicator', $env);
+  // Only write to the cache if not already in the cache.
+  if (!cache_get('environment_indicator')) {
+    cache_set('environment_indicator', $env);
+  }
+  drupal_alter($env);
   return $env;
 }