diff --git a/apc.install b/apc.install
index e64114a..b1f1e4d 100644
--- a/apc.install
+++ b/apc.install
@@ -33,6 +33,14 @@ function apc_requirements($phase) {
 
     $meets_version = version_compare($version, '3.1.1') >= 0;
   }
+  // drush can't determine version correctly because of memory partition of
+  // front-end and back-end. If you are running this via drush we assume you
+  // know what you are doing.
+  if (drupal_is_cli() && function_exists('drush_log') && $phase == 'install') {
+    $requirements['apc']['severity'] = REQUIREMENT_INFO;
+    drush_log(dt('The APC module needs the apc extension but we cannot reliable detect this via drush. Ensure that you have APC installed on the server before enabling this.'), 'ok');
+    return $requirements;
+  }
 
   $requirements['apc'] = array(
     'title' => $name,