diff --git a/packages/svelte/src/internal/client/dom/elements/style.js b/packages/svelte/src/internal/client/dom/elements/style.js
index 3e05eec30e..8fde5e1fea 100644
--- a/packages/svelte/src/internal/client/dom/elements/style.js
+++ b/packages/svelte/src/internal/client/dom/elements/style.js
@@ -15,7 +15,10 @@ function update_styles(dom, prev = {}, next, priority) {
 			if (next[key] == null) {
 				dom.style.removeProperty(key);
 			} else {
-				dom.style.setProperty(key, value, priority);
+				// setProperty rejects values with trailing semicolons; strip them so that
+				// reactive updates behave consistently with the initial cssText assignment
+				var str_value = String(value).replace(/;+\s*$/, '');
+				dom.style.setProperty(key, str_value, priority);
 			}
 		}
 	}