diff --git a/assets/css/src/components-plugin/_common.scss b/assets/css/src/components-plugin/_common.scss
index 0bd2b93e55..2010b1dc14 100644
--- a/assets/css/src/components-plugin/_common.scss
+++ b/assets/css/src/components-plugin/_common.scss
@@ -10,6 +10,10 @@ a:focus {
   outline: 0 none !important;
 }
 
+.nav-tab:focus {
+  box-shadow: none;
+}
+
 .mailpoet_success {
   color: #090;
 }