diff --git a/src/lang.zig b/src/lang.zig
index cc8d58a..05f631f 100644
--- a/src/lang.zig
+++ b/src/lang.zig
@@ -178,13 +178,13 @@ pub const Command = struct {
     };
 
     pub const Noise = CustomCommand(Tag.noise, custom.RandomNoise, struct {
-        seed: f32,
-        fill_bytes: f32,
+        seed: u64,
+        fill_bytes: usize,
     });
 
     pub const Wildnoise = CustomCommand(Tag.wildnoise, custom.WildNoise, struct {
-        seed: f32,
-        fill_bytes: f32,
+        seed: u64,
+        fill_bytes: usize,
     });
 
     pub const Write = CustomCommand(Tag.write, custom.Write, struct {