diff --git a/lib/d/test/Makefile.am b/lib/d/test/Makefile.am
index 44f2d66..0482583 100755
--- a/lib/d/test/Makefile.am
+++ b/lib/d/test/Makefile.am
@@ -17,6 +17,7 @@
 # under the License.
 #
 
+AUTOMAKE_OPTIONS = serial-tests
 
 # Thrift compiler rules