diff --git a/src/internal/dom.js b/src/internal/dom.js
index 2d661b5958..e7b32f5798 100644
--- a/src/internal/dom.js
+++ b/src/internal/dom.js
@@ -154,7 +154,7 @@ export function claim_text(nodes, data) {
 }
 
 export function set_data(text, data) {
-	text.data = '' + data;
+	if (text.data !== '' + data) text.data = '' + data;
 }
 
 export function set_input_type(input, type) {