diff --git a/sys/modules/usb/Makefile b/sys/modules/usb/Makefile
index c5eae0f5ff3..c0490a9c027 100644
--- a/sys/modules/usb/Makefile
+++ b/sys/modules/usb/Makefile
@@ -28,6 +28,11 @@
 SYSDIR?=${.CURDIR}/../..
 .include "${SYSDIR}/conf/kern.opts.mk"
 
+#
+# Allow USB modules to be built in parallel
+#
+SUBDIR_PARALLEL=
+
 #
 # Check for common USB debug flags to pass when building the USB
 # modules in this directory: