diff --git a/src/fn_register.rs b/src/fn_register.rs
index 9fbd0529..ee08dfd1 100644
--- a/src/fn_register.rs
+++ b/src/fn_register.rs
@@ -106,4 +106,4 @@ macro_rules! def_register {
 }
 
 #[cfg_attr(rustfmt, rustfmt_skip)]
-def_register!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S);
+def_register!(A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T);