diff --git a/krb5.spec b/krb5.spec
index 717e0a3..a4d1c5e 100644
--- a/krb5.spec
+++ b/krb5.spec
@@ -972,6 +972,7 @@ cd src
 top=`pwd`
 for configurein in `find -name configure.in -type f` ; do
 	pushd `dirname $configurein`
+	grep -q A._CONFIG_HEADER configure.in && autoheader -I "$top"
 	autoconf -I "$top"
 	popd
 done