diff --git a/lib/snf/src/bot.rs b/lib/snf/src/bot.rs
index 77936aa..a295fb5 100644
--- a/lib/snf/src/bot.rs
+++ b/lib/snf/src/bot.rs
@@ -4,6 +4,8 @@ use crate::newtypes;
 use crate::file::BlockId;
 use strafesnet_common::physics::Time;
 
+const VERSION:u32=0;
+
 type TimedPhysicsInstruction=strafesnet_common::instruction::TimedInstruction<strafesnet_common::physics::Instruction,strafesnet_common::physics::TimeInner>;
 
 #[derive(Debug)]
@@ -309,7 +311,7 @@ pub fn write_bot<W:BinWriterExt>(mut writer:W,physics_version:u32,instructions:i
 
 	let file_header=crate::file::Header{
 		fourcc:crate::file::FourCC::Bot,
-		version:0,
+		version:VERSION,
 		priming,
 		resource:0,
 		block_count,