diff --git a/server/pifr_server.environment.inc b/server/pifr_server.environment.inc
index ac0635b..0eacba3 100644
--- a/server/pifr_server.environment.inc
+++ b/server/pifr_server.environment.inc
@@ -546,7 +546,7 @@ function pifr_server_environment_plugins(array $test) {
  * @param integer $client_id Client ID.
  */
 function pifr_server_environment_status_reserve($environment_id, $test_id, $client_id) {
-  $exists = db_result(db_query('SELECT COUNT($test_id)
+  $exists = db_result(db_query('SELECT COUNT(test_id)
                                 FROM {pifr_environment_status}
                                 WHERE environment_id = %d AND test_id = %d',
                                 $environment_id, $test_id));