diff --git a/utils/theme-presets.ts b/utils/theme-presets.ts
index a94b4f62..a82787bd 100644
--- a/utils/theme-presets.ts
+++ b/utils/theme-presets.ts
@@ -1055,9 +1055,9 @@ export const defaultPresets: Record<string, ThemePreset> = {
         "sidebar-accent-foreground": "#4de8e8",
         "sidebar-border": "#164955",
         "sidebar-ring": "#4de8e8",
-        "font-sans": "Source Code Pro, monospace",
-        "font-serif": "Source Code Pro, monospace",
-        "font-mono": "Source Code Pro, monospace",
+        "font-sans": "Courier New, monospace",
+        "font-serif": "Courier New, monospace",
+        "font-mono": "Courier New, monospace",
         radius: "0.125rem",
         "shadow-color": "hsl(180 70% 60% / 0.2)",
         "shadow-opacity": "0.2",