diff --git a/gnu/dist/diffutils/diff.texi b/gnu/dist/diffutils/diff.texi
index 7551acba8b35..1143359b4de6 100644
--- a/gnu/dist/diffutils/diff.texi
+++ b/gnu/dist/diffutils/diff.texi
@@ -6,6 +6,9 @@
 @c %**end of header
 
 @ifinfo
+@direntry
+* diffutils: (diff).              print and merge differences in files.
+@end direntry
 This file documents the the GNU @code{diff}, @code{diff3}, @code{sdiff},
 and @code{cmp} commands for showing the differences between text files
 and the @code{patch} command for using their output to update files.