diff --git a/lib/libc/stdlib/alloca.3 b/lib/libc/stdlib/alloca.3
index c25d9025e767..e87cd9fb098c 100644
--- a/lib/libc/stdlib/alloca.3
+++ b/lib/libc/stdlib/alloca.3
@@ -70,7 +70,7 @@ pointer is returned.
 The
 .Fn alloca
 function appeared in
-.str-At-32v .
+.At 32v .
 .\" .Bx ?? .
 .\" The function appeared in 32v, pwb and pwb.2 and in 3bsd 4bsd
 .\" The first man page (or link to a man page that I can find at the