diff --git a/tests/Makefile.in b/tests/Makefile.in
index 75b8db4..354e60a 100644
--- a/tests/Makefile.in
+++ b/tests/Makefile.in
@@ -567,6 +567,9 @@ test: check
 stresstest: check
 	./unittests.pl stresstests.cfg
 
+iotest: check
+	./unittests.pl iotests.cfg
+
 # Tell versions [3.59,3.63) of GNU make to not export all variables.
 # Otherwise a system limit (for SysV at least) may be exceeded.
 .NOEXPORT: