diff --git a/core/src/main/java/org/elasticsearch/indices/IndexingMemoryController.java b/core/src/main/java/org/elasticsearch/indices/IndexingMemoryController.java
index 35bf4d3b62c..e4f5416ef53 100644
--- a/core/src/main/java/org/elasticsearch/indices/IndexingMemoryController.java
+++ b/core/src/main/java/org/elasticsearch/indices/IndexingMemoryController.java
@@ -256,6 +256,8 @@ public class IndexingMemoryController extends AbstractComponent implements Index
                     } finally {
                         runLock.unlock();
                     }
+                    // Could be while we were checking, more bytes arrived:
+                    totalBytes = bytesWrittenSinceCheck.addAndGet(bytes);
                 } else {
                     break;
                 }