diff --git a/src/cellmanager.js b/src/cellmanager.js
index a796297..23c6b1d 100644
--- a/src/cellmanager.js
+++ b/src/cellmanager.js
@@ -517,9 +517,12 @@ export default class CellManager {
                 }
 
                 promise = valuePromise.then((value) => {
-                    const done = editor.setValue(value, rowIndex, col);
                     const oldValue = this.getCell(colIndex, rowIndex).content;
 
+                    if (oldValue === value) return;
+
+                    const done = editor.setValue(value, rowIndex, col);
+
                     // update cell immediately
                     this.updateCell(colIndex, rowIndex, value);
                     $cell.focus();