--- sccs/sccs/cmd/src/diff.h.orig	2018-04-04 03:01:55.000000000 +0400
+++ sccs/sccs/cmd/src/diff.h	2020-09-02 11:56:26.000000000 +0400
@@ -200,7 +200,7 @@
 
 #if	defined(INS_BASE)
 #ifdef __STDC__
-char diff[] = INS_BASE  "/" SCCS_BIN_PRE "bin/diff";
+char diff[] = INS_BASE  "/" SCCS_BIN_PRE "libexec/sccs/diff";
 char diffh[] = INS_BASE  "/" SCCS_BIN_PRE "lib/diffh";
 #else
 char diff[] = "/usr/ccs/bin/diff";