diff --git a/tools/cabana/messageswidget.cc b/tools/cabana/messageswidget.cc
index f43185e025..1d86a53ad1 100644
--- a/tools/cabana/messageswidget.cc
+++ b/tools/cabana/messageswidget.cc
@@ -544,7 +544,7 @@ void MessageViewHeader::updateGeometries() {
 QSize MessageViewHeader::sizeHint() const {
   QSize sz = QHeaderView::sizeHint();
   if (editors[0]) {
-    sz.setHeight(sz.height() + editors[0]->minimumSizeHint().height());
+    sz.setHeight(sz.height() + editors[0]->minimumSizeHint().height() + 1);
   }
   return sz;
 }