diff --git a/std/regex/internal/backtracking.d b/std/regex/internal/backtracking.d
index 7829dc9fc..d528f46d8 100644
--- a/std/regex/internal/backtracking.d
+++ b/std/regex/internal/backtracking.d
@@ -807,8 +807,6 @@ final:
     return format;
 }
 
-alias Sequence(int B, int E) = staticIota!(B, E);
-
 struct CtContext
 {
     import std.conv : to, text;