diff --git a/app/assets/stylesheets/extend/bootstrap.scss b/app/assets/stylesheets/extend/bootstrap.scss
index 7941ffea7..1efd6f5ed 100644
--- a/app/assets/stylesheets/extend/bootstrap.scss
+++ b/app/assets/stylesheets/extend/bootstrap.scss
@@ -143,3 +143,10 @@
     }
   }
 }
+
+
+.bootstrap-datetimepicker-widget {
+  .dow {
+    @include font-button;
+  }
+}
diff --git a/app/assets/stylesheets/repositories.scss b/app/assets/stylesheets/repositories.scss
index a50fb6801..bc803e681 100644
--- a/app/assets/stylesheets/repositories.scss
+++ b/app/assets/stylesheets/repositories.scss
@@ -132,7 +132,7 @@
     }
 
     .dataTables_scrollBody {
-      thead {
+      thead th#checkbox {
         opacity: 0;
       }
     }