diff --git a/src/lang.zig b/src/lang.zig
index 4db0cb7..73ece6a 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -500,13 +500,10 @@ pub const Lang = struct {
                 }
 
                 const arg = maybe_arg.?;
+                if (cmd_field.field_type != f32)
+                    @compileError("LV2 parameter struct can only have f32 fields");
 
-                const argument_value = switch (cmd_field.field_type) {
-                    f32 => try std.fmt.parseFloat(f32, arg),
-                    else => @compileError("LV2 parameter struct can only have f32 fields"),
-                };
-
-                @field(cmd.parameters, cmd_field.name) = argument_value;
+                @field(cmd.parameters, cmd_field.name) = try std.fmt.parseFloat(f32, arg);
             }
         } else {
             inline for (@typeInfo(command_struct).Struct.fields) |cmd_field| {