diff --git a/httprl.nonblocktest.inc b/httprl.nonblocktest.inc
index 751f6c1..fd88e55 100644
--- a/httprl.nonblocktest.inc
+++ b/httprl.nonblocktest.inc
@@ -50,5 +50,12 @@ function httprl_lock_release($name) {
   global $locks;
 
   unset($locks[$name]);
-  db_query("DELETE FROM {semaphore} WHERE name = '%s'", $name);
+  if (substr(VERSION, 0, 1) >= 7) {
+    db_delete('semaphore')
+      ->condition('name', $name)
+      ->execute();
+  }
+  else {
+    db_query("DELETE FROM {semaphore} WHERE name = '%s'", $name);
+  }
 }