Fix automake's warning, printed from build_configure

diff --git a/doc/docutils/Makefile.am b/doc/docutils/Makefile.am
index 631ab7c069a780cf96a7336e5b0ff1bbbaa98d34..eeec2fbf98fe05a66fe514212fb643cfb5c8d744 100644 (file)
--- a/doc/docutils/Makefile.am
+++ b/doc/docutils/Makefile.am
@@ -30,7 +30,7 @@ RSTFILES = \
        overview.rst \
        docapi.rst
 
-EXTRA_DIST = $(RSTFILES)
+EXTRA_DIST += $(RSTFILES)
 
 SPHINXOPTS      =
 SOURCEDIR       = $(srcdir)