diff --git a/config/themes.json b/config/themes.json
index 5335a4b3..2ed412ef 100644
--- a/config/themes.json
+++ b/config/themes.json
@@ -7,7 +7,7 @@
         "CustomDialogHeight":         "200",
         "FontSize":         "12",
         "FontFamily":       "Arial",
-        "FontSizeHeading":  "16",
+        "HeadingFontSize":  "16",
         "HeaderFontFamily": "Consolas, Monaco",
         "CheckBoxBulletDecoratorSize": "14",
         "CheckBoxMargin": "15,0,0,2",
diff --git a/functions/public/Invoke-WPFUIElements.ps1 b/functions/public/Invoke-WPFUIElements.ps1
index 3851536d..7ae7f094 100644
--- a/functions/public/Invoke-WPFUIElements.ps1
+++ b/functions/public/Invoke-WPFUIElements.ps1
@@ -142,7 +142,7 @@ function Invoke-WPFUIElements {
 
             $label = New-Object Windows.Controls.Label
             $label.Content = $category -replace ".*__", ""
-            $label.FontSize = $theme.FontSizeHeading
+            $label.FontSize = $theme.HeadingFontSize
             $label.FontFamily = $theme.HeaderFontFamily
             $stackPanel.Children.Add($label) | Out-Null