diff --git a/src/containers/base_sequences.jl b/src/containers/base_sequences.jl
index 7f80beff872d53d43b7c4f3f8bcf15e1bcbdcd09..09c282ffb2ef382f523962022467d74fe2b13a1a 100644
--- a/src/containers/base_sequences.jl
+++ b/src/containers/base_sequences.jl
@@ -175,6 +175,8 @@ nrepeat(::Sequence) = 0
 to_block_pair(pair::Pair) = pair[1] => to_block(pair[2])
 to_block_pair(other) = nothing => to_block(other)
 
+@defvar repetition_time(seq::Sequence) = duration(seq)
+
 """
     to_block(block_like)