diff --git a/src/platform/util.zig b/src/platform/util.zig
index b7e38279..d8878268 100644
--- a/src/platform/util.zig
+++ b/src/platform/util.zig
@@ -169,10 +169,10 @@ pub fn msgSend(obj: anytype, sel_name: [:0]const u8, args: anytype, comptime Ret
 
     const FnType = switch (args_meta.len) {
         0 => *const fn (@TypeOf(obj), objc.SEL) callconv(.C) ReturnType,
-        1 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].field_type) callconv(.C) ReturnType,
-        2 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].field_type, args_meta[1].field_type) callconv(.C) ReturnType,
-        3 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].field_type, args_meta[1].field_type, args_meta[2].field_type) callconv(.C) ReturnType,
-        4 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].field_type, args_meta[1].field_type, args_meta[2].field_type, args_meta[3].field_type) callconv(.C) ReturnType,
+        1 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].type) callconv(.C) ReturnType,
+        2 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].type, args_meta[1].type) callconv(.C) ReturnType,
+        3 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].type, args_meta[1].type, args_meta[2].type) callconv(.C) ReturnType,
+        4 => *const fn (@TypeOf(obj), objc.SEL, args_meta[0].type, args_meta[1].type, args_meta[2].type, args_meta[3].type) callconv(.C) ReturnType,
         else => @compileError("Unsupported number of args"),
     };