diff --git a/liblircd/src/ir-encode.c b/liblircd/src/ir-encode.c
index a088a7e..f76d5e5 100644
--- a/liblircd/src/ir-encode.c
+++ b/liblircd/src/ir-encode.c
@@ -390,7 +390,7 @@ static const struct {
 	[RC_PROTO_NECX] = { "necx", 0xffffff, 67, 38000, nec_encode },
 	[RC_PROTO_NEC32] = { "nec32", 0xffffffff, 67, 38000, nec_encode },
 	[RC_PROTO_SANYO] = { "sanyo", 0x1fffff, 87, 38000, sanyo_encode },
-	[RC_PROTO_RC6_0] = { "rc6_0", 0xffff, 41, 36000, rc6_encode },
+	[RC_PROTO_RC6_0] = { "rc6_0", 0xffff, 43, 36000, rc6_encode },
 	[RC_PROTO_RC6_6A_20] = { "rc6_6a_20", 0xfffff, 52, 36000, rc6_encode },
 	[RC_PROTO_RC6_6A_24] = { "rc6_6a_24", 0xffffff, 60, 36000, rc6_encode },
 	[RC_PROTO_RC6_6A_32] = { "rc6_6a_32", 0xffffffff, 76, 36000, rc6_encode },
diff --git a/src/linux_protocol.rs b/src/linux_protocol.rs
index ff627c3..87c29be 100644
--- a/src/linux_protocol.rs
+++ b/src/linux_protocol.rs
@@ -289,13 +289,16 @@ mod test {
                 for _ in 0..1000 {
                     let scancode = rng.next_u32() & linux.scancode_mask;
 
-                    println!("proto: {proto:?} scancode:{scancode:#x}");
-
                     irctl.resize(max_size as usize, 0);
 
                     let len =
                         unsafe { liblircd::protocol_encode(proto, scancode, irctl.as_mut_ptr()) };
 
+                    assert!(
+                        len as usize <= max_size,
+                        "{len} {max_size} proto:{proto:?} scancode:{scancode:#x}"
+                    );
+
                     irctl.resize(len as usize, 0);
 
                     let mut vars = Vartable::new();