diff --git a/files.js b/files.js
index 2aa9960..62e7f55 100644
--- a/files.js
+++ b/files.js
@@ -619,8 +619,10 @@ function layoutPDFClues(doc, style) {
 
 let openPuzzleInput = document.getElementById('open-puzzle-input');
 let openWordlistInput = document.getElementById('open-wordlist-input');
+let addWordlistInput = document.getElementById('add-wordlist-input');
 openPuzzleInput.addEventListener('change', openFile, false);
 openWordlistInput.addEventListener('change', openWordlistFile, false);
+addWordlistInput.addEventListener('change', addWordlistFile, false);
 openPuzzleInput.onclick = function () {
     this.value = null;
 };
diff --git a/index.html b/index.html
index 1d98986..372d135 100644
--- a/index.html
+++ b/index.html
@@ -61,6 +61,10 @@ <h4>Export as:</h4>
       <i class="fa fa-book fa-fw" aria-hidden="true"></i>
     </button>
     <input id="open-wordlist-input" class="hidden" type="file" accept=".txt"/>
+    <button id="add-wordlist" type="button" data-tooltip="Add wordlist" onclick="addWordlist()">
+      <i class="fa fa-plus-square fa-fw" aria-hidden="true"></i>
+    </button>
+    <input id="add-wordlist-input" class="hidden" type="file" accept=".txt"/>
     <button id="auto-fill" type="button" data-tooltip="Auto-fill puzzle" onclick="autoFill()">
       <i class="fa fa-magic fa-fw" aria-hidden="true"></i>
     </button>
diff --git a/wordlist.js b/wordlist.js
index 8013803..017cca3 100644
--- a/wordlist.js
+++ b/wordlist.js
@@ -33,23 +33,11 @@ function addToWordlist(newWords) {
   }
 }
 
-function sortWordlist() {
-  for (let i = 3; i < wordlist.length; i++) {
-    wordlist[i].sort();
-  }
+function addWordlist(){
+  document.getElementById("add-wordlist-input").click();
 }
 
-function openWordlist() {
-  document.getElementById("open-wordlist-input").click();
-}
-
-function openWordlistFile(e) {
-  wordlist = [
-    [], [], [], [], [],
-    [], [], [], [], [],
-    [], [], [], [], [], []
-  ];
-
+function addWordlistFile(e){
   const file = e.target.files[0];
   if (!file) {
     return;
@@ -65,6 +53,29 @@ function openWordlistFile(e) {
   reader.readAsText(file);
 }
 
+function clearWordlist(){
+  wordlist = [
+    [], [], [], [], [],
+    [], [], [], [], [],
+    [], [], [], [], [], []
+  ];
+}
+
+function sortWordlist() {
+  for (let i = 3; i < wordlist.length; i++) {
+    wordlist[i].sort();
+  }
+}
+
+function openWordlist() {
+  document.getElementById("open-wordlist-input").click();
+}
+
+function openWordlistFile(e) {
+  clearWordlist();
+  addWordlistFile(e);
+}
+
 function openDefaultWordlist(url) {
   let textFile = new XMLHttpRequest();
   textFile.open("GET", url, true);