diff --git a/gtk/theme/HighContrast/_common.scss b/gtk/theme/HighContrast/_common.scss
index f2e3e59d24..86f8fc80bb 100644
--- a/gtk/theme/HighContrast/_common.scss
+++ b/gtk/theme/HighContrast/_common.scss
@@ -2313,7 +2313,7 @@ GtkPaned.wide { // this is for the paned with wide separator
 /**************
  * GtkInfoBar *
  **************/
-GtkInfoBar {
+infobar {
   border-width: 0;
   border-style: none;
 }
diff --git a/gtk/theme/HighContrast/gtk.css b/gtk/theme/HighContrast/gtk.css
index 74fd38fef0..fdb4b954c9 100644
--- a/gtk/theme/HighContrast/gtk.css
+++ b/gtk/theme/HighContrast/gtk.css
@@ -2467,7 +2467,7 @@ GtkPaned.wide {
 /**************
  * GtkInfoBar *
  **************/
-GtkInfoBar {
+infobar {
   border-width: 0;
   border-style: none; }