diff --git a/popup/popup.css b/popup/popup.css
index ebb958c2..f8fb5e66 100644
--- a/popup/popup.css
+++ b/popup/popup.css
@@ -6,6 +6,7 @@ body {
 }
 .firefox body {
   background-color: #fff;
+  color: #000;
 }
 
 body > div:not(#installed) {