diff --git a/Documentation/Makefile b/Documentation/Makefile
index ed8b886802..c00f5f62b7 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -107,7 +107,7 @@ WEBDOC_DEST = /pub/software/scm/git/docs
 
 $(patsubst %.txt,%.html,$(wildcard howto/*.txt)): %.html : %.txt
 	rm -f $@+ $@
-	sed -e '1,/^$$/d' $? | asciidoc -b xhtml11 - >$@+
+	sed -e '1,/^$$/d' $< | asciidoc -b xhtml11 - >$@+
 	mv $@+ $@
 
 install-webdoc : html