--- a/mobile/android/chrome/content/aboutAddons.js
+++ b/mobile/android/chrome/content/aboutAddons.js
@@ -516,19 +516,19 @@ var Addons = {
     let addon = aAddon || detailItem.addon;
     if (!addon)
       return;
 
     let listItem = this._getElementForAddon(addon.id);
 
     function setDisabled(addon, value) {
       if (value) {
-        return addon.enable();
+        return addon.disable();
       }
-      return addon.disable();
+      return addon.enable();
     }
 
     let opType;
     if (addon.type == "theme") {
       if (aValue) {
         // We can have only one theme enabled, so disable the current one if any
         let list = document.getElementById("addons-list");
         let item = list.firstElementChild;