diff --git a/gtk-3.0/gtk-dark.css b/gtk-3.0/gtk-dark.css
index feae643..aa4cab8 100755
--- a/gtk-3.0/gtk-dark.css
+++ b/gtk-3.0/gtk-dark.css
@@ -2576,8 +2576,8 @@ headerbar {
     min-height: 20px; }
     .default-decoration.titlebar button.titlebutton,
     headerbar.default-decoration button.titlebutton {
-      min-height: 19px;
-      min-width: 19px;
+      min-height: 20px;
+      min-width: 20px;
       margin: 0;
       padding: 0; }
 
diff --git a/gtk-3.0/gtk.css b/gtk-3.0/gtk.css
index 0657e39..677b129 100755
--- a/gtk-3.0/gtk.css
+++ b/gtk-3.0/gtk.css
@@ -2583,8 +2583,8 @@ headerbar {
     min-height: 20px; }
     .default-decoration.titlebar button.titlebutton,
     headerbar.default-decoration button.titlebutton {
-      min-height: 19px;
-      min-width: 19px;
+      min-height: 20px;
+      min-width: 20px;
       margin: 0;
       padding: 0; }
 
diff --git a/gtk-3.0/widgets/_header-bars.scss b/gtk-3.0/widgets/_header-bars.scss
index 4285bae..08ecfd7 100644
--- a/gtk-3.0/widgets/_header-bars.scss
+++ b/gtk-3.0/widgets/_header-bars.scss
@@ -217,8 +217,8 @@ headerbar {
     min-height: 20px;
 
     button.titlebutton {
-      min-height: 19px;
-      min-width: 19px;
+      min-height: 20px;
+      min-width: 20px;
       margin: 0;
       padding: 0;
     }