diff --git a/man2/rt_sigreturn.2 b/man2/rt_sigreturn.2
index b9a2fddea..830b7b99f 100644
--- a/man2/rt_sigreturn.2
+++ b/man2/rt_sigreturn.2
@@ -1 +1 @@
-so man2/sigreturn.2
+.so man2/sigreturn.2