diff --git a/docs/libcurl/Makefile.am b/docs/libcurl/Makefile.am
index 9ef967d0a2d0a8f42eda5054a7b175a042663753..14d1a49b4bc6864e0bfb89d1feade67473b1597a 100644
--- a/docs/libcurl/Makefile.am
+++ b/docs/libcurl/Makefile.am
@@ -122,7 +122,7 @@ CLEANFILES = $(HTMLPAGES) $(PDFPAGES)
 
 EXTRA_DIST = $(man_MANS) $(HTMLPAGES) index.html $(PDFPAGES)
 
-MAN2HTML= roffit < $< >$@
+MAN2HTML= roffit --mandir=. < $< >$@
 
 SUFFIXES = .3 .html