Index: kernel/generic/src/ddi/ddi.c
===================================================================
--- kernel/generic/src/ddi/ddi.c	(revision 22af3af6cb9bbb2335fef06631a73e0986dbe193)
+++ kernel/generic/src/ddi/ddi.c	(revision ff211d250373e7bc4e7c6a89838a8a7a4dea9e8f)
@@ -276,5 +276,5 @@
 unative_t sys_preempt_control(int enable)
 {
-	if (!cap_get(TASK) & CAP_PREEMPT_CONTROL)
+	if (!(cap_get(TASK) & CAP_PREEMPT_CONTROL))
 		return EPERM;