diff --git a/src/cascadia/TerminalSettingsModel/defaults.json b/src/cascadia/TerminalSettingsModel/defaults.json
index 6505ce094e8..9dedb7c32c0 100644
--- a/src/cascadia/TerminalSettingsModel/defaults.json
+++ b/src/cascadia/TerminalSettingsModel/defaults.json
@@ -283,15 +283,21 @@
     "themes": [
         {
             "name": "light",
-            "window.applicationTheme": "light"
+            "window":{
+                "applicationTheme": "light"
+            }
         },
         {
             "name": "dark",
-            "window.applicationTheme": "dark"
+            "window":{
+                "applicationTheme": "dark"
+            }
         },
         {
             "name": "system",
-            "window.applicationTheme": "system"
+            "window":{
+                "applicationTheme": "system"
+            }
         }
     ],
     "actions":
diff --git a/src/cascadia/WindowsTerminal/AppHost.cpp b/src/cascadia/WindowsTerminal/AppHost.cpp
index 560fe4151b0..628c74b9a3f 100644
--- a/src/cascadia/WindowsTerminal/AppHost.cpp
+++ b/src/cascadia/WindowsTerminal/AppHost.cpp
@@ -1329,9 +1329,9 @@ void AppHost::_updateTheme()
 {
     auto theme = _logic.Theme();
 
-    _window->OnApplicationThemeChanged(theme.RequestedTheme());
+    _window->OnApplicationThemeChanged(theme.Window().RequestedTheme());
 
-    int attribute = theme.UseMica() ? /* DWMSBT_MAINWINDOW */ 2 : /*DWMSBT_NONE*/ 1;
+    int attribute = theme.Window().UseMica() ? /* DWMSBT_MAINWINDOW */ 2 : /*DWMSBT_NONE*/ 1;
     DwmSetWindowAttribute(_window->GetHandle(), /* DWMWA_SYSTEMBACKDROP_TYPE */ 38, &attribute, sizeof(attribute));
 }