diff --git a/man3/program_invocation_name.3 b/man3/program_invocation_name.3
index 07ba9e6a1..c8421a1cc 100644
--- a/man3/program_invocation_name.3
+++ b/man3/program_invocation_name.3
@@ -58,4 +58,4 @@ file provides access to similar information.
 These variables are GNU extensions, and should not be
 used in programs intended to be portable.
 .SH SEE ALSO
-.BR proc.5
+.BR proc (5)