diff --git a/autogen.sh b/autogen.sh
index 7d0382061..cd14e9fe8 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -48,6 +48,12 @@ rm libltdl/configure.tmp
 
 autoheader
 autoconf
+
+# Automake has a bug that will let it only add one copy of a missing
+# file.  We need two mdate-sh, tho, one in doc/ref/ and one in
+# doc/tutorial/.  We run automake twice as a workaround.
+
+automake --add-missing
 automake --add-missing
 
 # Make sure that libltdl uses the same autoconf version as the rest.