diff --git a/tutorial/cpp/Makefile.am b/tutorial/cpp/Makefile.am
index 0157b8d..b829845 100755
--- a/tutorial/cpp/Makefile.am
+++ b/tutorial/cpp/Makefile.am
@@ -16,6 +16,7 @@
 # specific language governing permissions and limitations
 # under the License.
 #
+.NOTPARALLEL:
 noinst_LTLIBRARIES = libtutorialgencpp.la
 nodist_libtutorialgencpp_la_SOURCES = \
 	gen-cpp/Calculator.cpp \