diff --git a/src/content/mytinytodo.js b/src/content/mytinytodo.js
index 14c846f..f5cd7d3 100644
--- a/src/content/mytinytodo.js
+++ b/src/content/mytinytodo.js
@@ -272,7 +272,12 @@ var mytinytodo = window.mytinytodo = _mtt = {
         });
 
         $('#tagcloudbtn').click(function(){
-            $('#tagcloudAllLists').prop('checked', flag.showTagsFromAllLists);
+            if (curList.id == -1) {
+                $('#tagcloudAllLists').prop('checked', true).prop('disabled', true);
+            }
+            else {
+                $('#tagcloudAllLists').prop('checked', flag.showTagsFromAllLists).prop('disabled', false);
+            }
             if(!_mtt.menus.tagcloud) _mtt.menus.tagcloud = new mttMenu('tagcloud', {
                 beforeShow: function(){
                     if(flag.tagsChanged) {
diff --git a/src/content/theme/style.css b/src/content/theme/style.css
index 3d8f2b3..2f76626 100644
--- a/src/content/theme/style.css
+++ b/src/content/theme/style.css
@@ -730,8 +730,11 @@ h3.page-title a.mtt-back-button {
 #priopopup .prio-pos:hover { border-color: var(--color-priority-urgent); }
 #priopopup .prio-pos-1:hover { border-color: var(--color-priority-high); }
 
-#tagcloudbtn { font-size:1rem; font-weight:normal; margin-left:auto; }
-#mtt.show-all-tasks #tagcloudbtn { display:none; }
+#tagcloudbtn {
+  font-size: 1rem;
+  font-weight: normal;
+  margin-left: auto;
+}
 #tagcloud {
   overflow: hidden; z-index:100;
   background-color:var(--color-menu);