diff --git a/lib/drivers/node-mongodb-native/collection.js b/lib/drivers/node-mongodb-native/collection.js
index 1e4678ff93..b4a61fe075 100644
--- a/lib/drivers/node-mongodb-native/collection.js
+++ b/lib/drivers/node-mongodb-native/collection.js
@@ -124,6 +124,7 @@ function iter(i) {
 
     let _args = args;
     let callback = null;
+    let timeout = null;
     if (this._shouldBufferCommands() && this.buffer) {
       this.conn.emit('buffer', {
         _id: opId,
@@ -136,7 +137,6 @@ function iter(i) {
       let callback;
       let _args = args;
       let promise = null;
-      let timeout = null;
       if (syncCollectionMethods[i] && typeof lastArg === 'function') {
         this.addQueue(i, _args);
         callback = lastArg;
@@ -239,6 +239,9 @@ function iter(i) {
 
       if (syncCollectionMethods[i] && typeof lastArg === 'function') {
         const result = collection[i].apply(collection, _args.slice(0, _args.length - 1));
+        if (timeout != null) {
+          clearTimeout(timeout);
+        }
         this.conn.emit('operation-end', { _id: opId, modelName: _this.modelName, collectionName: this.name, method: i, result });
         return lastArg.call(this, null, result);
       }
@@ -247,6 +250,9 @@ function iter(i) {
       if (ret != null && typeof ret.then === 'function') {
         return ret.then(
           result => {
+            if (timeout != null) {
+              clearTimeout(timeout);
+            }
             if (typeof lastArg === 'function') {
               lastArg(null, result);
             } else {
@@ -255,6 +261,9 @@ function iter(i) {
             return result;
           },
           error => {
+            if (timeout != null) {
+              clearTimeout(timeout);
+            }
             if (typeof lastArg === 'function') {
               lastArg(error);
               return;
@@ -265,10 +274,16 @@ function iter(i) {
           }
         );
       }
+      if (timeout != null) {
+        clearTimeout(timeout);
+      }
       return ret;
     } catch (error) {
       // Collection operation may throw because of max bson size, catch it here
       // See gh-3906
+      if (timeout != null) {
+        clearTimeout(timeout);
+      }
       if (typeof lastArg === 'function') {
         return lastArg(error);
       } else {