diff --git a/js/index.mjs b/js/index.mjs
index 235a013..7c97e13 100644
--- a/js/index.mjs
+++ b/js/index.mjs
@@ -32,9 +32,14 @@ function handle_mutation_word_keyup(event) {
 	const el_mutations = document.querySelector("#mutations");
 	const el_step = event.target.closest(".mutation-step");
 	const el_word = event.target.closest(".mutation-option");
+	const els_word = el_step.querySelectorAll(".mutation-option");
+	
+	// 2: Update UI - Change classes, Remove all subsequent mutation steps
+	for(let i = 0; i < els_word.length; i++)
+		els_word[i].classList.remove("selected");
 	
-	// 2: Update UI - Add classes, Remove all subsequent mutation steps
 	el_word.classList.add("selected");
+	
 	while(el_step.nextElementSibling !== null)
 		el_step.parentNode.removeChild(el_step.nextElementSibling);