diff --git a/Documentation/Makefile b/Documentation/Makefile
index d079d7c73a..623f1a866d 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -331,6 +331,7 @@ clean:
 	$(RM) SubmittingPatches.txt
 	$(RM) $(cmds_txt) $(mergetools_txt) *.made
 	$(RM) manpage-base-url.xsl
+	'$(SHELL_PATH_SQ)' ./doc-diff --clean
 
 $(MAN_HTML): %.html : %.txt asciidoc.conf
 	$(QUIET_ASCIIDOC)$(RM) $@+ $@ && \