diff --git a/CHANGELOG.md b/CHANGELOG.md
index 47e22e6b..0744f87a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,7 @@ CHANGELOG for FlatCAM Evo beta
 
 - upgraded the Geometry Editor main UI
 - upgraded the FCButton widget (and made it used everywhere instead of the QPushButton) so it can have the color and font weight properties settable
+- styled the border for the QToolButton (for dark mode)
 
 9.05.2022
 
diff --git a/appGUI/themes/dark_style_sheet.py b/appGUI/themes/dark_style_sheet.py
index fa01f3d7..3688c129 100644
--- a/appGUI/themes/dark_style_sheet.py
+++ b/appGUI/themes/dark_style_sheet.py
@@ -312,6 +312,7 @@ QDialogButtonBox QPushButton {
     min-width: 65px;
 }
 QToolButton {
+    border: 1px solid rgba(63.000, 64.000, 66.000, 1.000);
     padding: 5px;
     border-radius: 2px;
     spacing: 2px;