diff --git a/src/cellmanager.js b/src/cellmanager.js
index 6e5357b..5510eeb 100644
--- a/src/cellmanager.js
+++ b/src/cellmanager.js
@@ -519,7 +519,7 @@ export default class CellManager {
                 promise = valuePromise.then((value) => {
                     const oldValue = this.getCell(colIndex, rowIndex).content;
 
-                    if (oldValue === value) return;
+                    if (oldValue === value) return false;
 
                     const done = editor.setValue(value, rowIndex, col);