diff --git a/include/ghostty.h b/include/ghostty.h
index 56027bfad..d65eb7203 100644
--- a/include/ghostty.h
+++ b/include/ghostty.h
@@ -379,7 +379,7 @@ typedef struct {
   ghostty_platform_u platform;
   void* userdata;
   double scale_factor;
-  uint16_t font_size;
+  uint8_t font_size;
   const char* working_directory;
   const char* command;
 } ghostty_surface_config_s;
diff --git a/macos/Sources/Ghostty/SurfaceView.swift b/macos/Sources/Ghostty/SurfaceView.swift
index f4fefbaed..d007a898c 100644
--- a/macos/Sources/Ghostty/SurfaceView.swift
+++ b/macos/Sources/Ghostty/SurfaceView.swift
@@ -252,7 +252,7 @@ extension Ghostty {
     /// libghostty, usually from the Ghostty configuration.
     struct SurfaceConfiguration {
         /// Explicit font size to use in points
-        var fontSize: UInt16? = nil
+        var fontSize: UInt8? = nil
         
         /// Explicit working directory to set
         var workingDirectory: String? = nil
diff --git a/src/apprt/embedded.zig b/src/apprt/embedded.zig
index ea6d81cc2..741cf7cc3 100644
--- a/src/apprt/embedded.zig
+++ b/src/apprt/embedded.zig
@@ -313,7 +313,7 @@ pub const Surface = struct {
         scale_factor: f64 = 1,
 
         /// The font size to inherit. If 0, default font size will be used.
-        font_size: u16 = 0,
+        font_size: u8 = 0,
 
         /// The working directory to load into.
         working_directory: [*:0]const u8 = "",
@@ -1041,7 +1041,7 @@ pub const Surface = struct {
     }
 
     fn newSurfaceOptions(self: *const Surface) apprt.Surface.Options {
-        const font_size: u16 = font_size: {
+        const font_size: u8 = font_size: {
             if (!self.app.config.@"window-inherit-font-size") break :font_size 0;
             break :font_size self.core_surface.font_size.points;
         };