diff --git a/Makefile.am b/Makefile.am
index 3475a98..98a7581 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -74,7 +74,7 @@ ChangeLog:
 
 check-doc-dist:
 	cd $(srcdir) && git submodule update
-	cd $(srcdir)/doc && git pull
+	cd $(srcdir)/doc && git checkout master && git pull
 	perl -pe "s,^EXTRA_DIST = .*,EXTRA_DIST = `cd $(srcdir) && ls doc/*.asciidoc | grep -v Todo.ascii | xargs echo`," \
 		< $(srcdir)/Makefile.am > check-doc-dist.tmp
 	diff -ur $(srcdir)/Makefile.am check-doc-dist.tmp || \