diff --git a/src/runtime/internal/dom.ts b/src/runtime/internal/dom.ts
index d8ebffa2b1..d9af89565e 100644
--- a/src/runtime/internal/dom.ts
+++ b/src/runtime/internal/dom.ts
@@ -94,7 +94,9 @@ export function set_attributes(node: Element & ElementCSSInlineStyle, attributes
 		if (key === 'style') {
 			node.style.cssText = attributes[key];
 		} else if (key in node) {
-			node[key] = attributes[key];
+			if (node[key] !== attributes[key]) {
+				node[key] = attributes[key];
+			}
 		} else {
 			attr(node, key, attributes[key]);
 		}
@@ -291,4 +293,4 @@ export class HtmlTag {
 	d() {
 		this.n.forEach(detach);
 	}
-}
\ No newline at end of file
+}