diff --git a/data/theme/gdm.css b/data/theme/gdm.css
index 83a09c1f7..b6a7e8c69 100644
--- a/data/theme/gdm.css
+++ b/data/theme/gdm.css
@@ -98,6 +98,10 @@
     color: #666666;
 }
 
+.login-dialog-not-listed-button:hover .login-dialog-not-listed-label {
+    color: white;
+}
+
 .login-dialog-prompt-layout {
     padding-bottom: 32px;
 }