1 files changed, 2 insertions, 1 deletions
diff --git a/lib/during.js b/lib/during.js
index e25d90a..549ad44 100644
--- a/lib/during.js
+++ b/lib/during.js
@@ -1,4 +1,5 @@
 import noop from 'lodash/noop';
+import onlyOnce from './internal/onlyOnce';
 
 /**
  * Like [`whilst`]{@link module:ControlFlow.whilst}, except the `test` is an asynchronous function that
@@ -38,7 +39,7 @@ import noop from 'lodash/noop';
  * );
  */
 export default function during(test, fn, callback) {
-    callback = callback || noop;
+    callback = onlyOnce(callback || noop);
 
     function next(err) {
         if (err) return callback(err);