diff --git a/headers/posix/sched.h b/headers/posix/sched.h
index b5598a1568..b22f28d9c4 100644
--- a/headers/posix/sched.h
+++ b/headers/posix/sched.h
@@ -11,9 +11,10 @@ extern "C" {
 #endif
 
 
-#define SCHED_OTHER		1
+#define SCHED_FIFO		1
 #define SCHED_RR		2
-#define SCHED_FIFO		4
+#define SCHED_SPORADIC	3
+#define SCHED_OTHER		4
 
 struct sched_param {
 	int sched_priority;
diff --git a/src/system/libroot/posix/scheduler.cpp b/src/system/libroot/posix/scheduler.cpp
index cb9a59bf92..95799b6c04 100644
--- a/src/system/libroot/posix/scheduler.cpp
+++ b/src/system/libroot/posix/scheduler.cpp
@@ -27,6 +27,7 @@ sched_get_priority_min(int policy)
 	switch (policy) {
 		case SCHED_FIFO:
 		case SCHED_RR:
+		case SCHED_SPORADIC:
 		case SCHED_OTHER:
 			return B_LOW_PRIORITY;
 
@@ -43,6 +44,7 @@ sched_get_priority_max(int policy)
 	switch (policy) {
 		case SCHED_FIFO:
 		case SCHED_RR:
+		case SCHED_SPORADIC:
 		case SCHED_OTHER:
 			return B_URGENT_DISPLAY_PRIORITY;