Index: src/tests/Makefile.am
===================================================================
--- src/tests/Makefile.am	(revision 320eb73a17c6f83eb7bf2bba712e6e451474a9c7)
+++ src/tests/Makefile.am	(revision 633a642259a81ef63c70e8867f8d610048550927)
@@ -65,5 +65,5 @@
 
 concurrency :
-	@+python test.py --debug=${debug} ${concurrent} ${concurrent_test}
+	@+python test.py --debug=${debug} -Iconcurrent
 
 .dummy : .dummy.c @CFA_BINDIR@/@CFA_NAME@
Index: src/tests/Makefile.in
===================================================================
--- src/tests/Makefile.in	(revision 320eb73a17c6f83eb7bf2bba712e6e451474a9c7)
+++ src/tests/Makefile.in	(revision 633a642259a81ef63c70e8867f8d610048550927)
@@ -743,5 +743,5 @@
 
 concurrency :
-	@+python test.py --debug=${debug} ${concurrent} ${concurrent_test}
+	@+python test.py --debug=${debug} -Iconcurrent
 
 .dummy : .dummy.c @CFA_BINDIR@/@CFA_NAME@