diff --git a/website/src/lib/components/toolbar/tools/Reduce.svelte b/website/src/lib/components/toolbar/tools/Reduce.svelte
index 5e74d4d3..46804f1a 100644
--- a/website/src/lib/components/toolbar/tools/Reduce.svelte
+++ b/website/src/lib/components/toolbar/tools/Reduce.svelte
@@ -130,6 +130,8 @@
 				$map.removeSource('simplified');
 			}
 		}
+		unsubscribes.forEach((unsubscribe) => unsubscribe());
+		simplified.clear();
 	});
 
 	function reduce() {