diff --git a/buildtypes/make.sh.in b/buildtypes/make.sh.in
index c94a35e..d4bbba1 100644
--- a/buildtypes/make.sh.in
+++ b/buildtypes/make.sh.in
@@ -22,7 +22,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 
-if [ ! -r ${S}/Makefile ] ; then
+if [ ! -r ${S}/Makefile -a ! -r ${S}/makefile ] ; then
     return
 fi