diff --git a/include/nuttx/semaphore.h b/include/nuttx/semaphore.h
index 1b90a1b6a0..579a0c4a10 100644
--- a/include/nuttx/semaphore.h
+++ b/include/nuttx/semaphore.h
@@ -160,11 +160,7 @@ int sem_reset(FAR sem_t *sem, int16_t count);
  *
  ****************************************************************************/
 
-#ifdef CONFIG_PRIORITY_INHERITANCE
 int sem_getprotocol(FAR sem_t *sem, FAR int *protocol);
-#else
-#  define sem_getprotocol(s,p) do { *(p) == SEM_PRIO_NONE); } while (0)
-#endif
 
 /****************************************************************************
  * Function: sem_setprotocol
@@ -202,11 +198,7 @@ int sem_getprotocol(FAR sem_t *sem, FAR int *protocol);
  *
  ****************************************************************************/
 
-#ifdef CONFIG_PRIORITY_INHERITANCE
 int sem_setprotocol(FAR sem_t *sem, int protocol);
-#else
-#  define sem_setprotocol(s,p)  ((p) == SEM_PRIO_NONE ? 0 : -ENOSYS);
-#endif
 
 #undef EXTERN
 #ifdef __cplusplus
diff --git a/libc/semaphore/Make.defs b/libc/semaphore/Make.defs
index d456f07520..cafa18b65a 100644
--- a/libc/semaphore/Make.defs
+++ b/libc/semaphore/Make.defs
@@ -35,11 +35,7 @@
 
 # Add the semaphore C files to the build
 
-CSRCS += sem_init.c sem_getvalue.c
-
-ifeq ($(CONFIG_PRIORITY_INHERITANCE),y)
-CSRCS += sem_getprotocol.c
-endif
+CSRCS += sem_init.c sem_getprotocol.c sem_getvalue.c
 
 # Add the semaphore directory to the build
 
diff --git a/libc/semaphore/sem_getprotocol.c b/libc/semaphore/sem_getprotocol.c
index 4ae1606ff7..614d5da72a 100644
--- a/libc/semaphore/sem_getprotocol.c
+++ b/libc/semaphore/sem_getprotocol.c
@@ -43,8 +43,6 @@
 
 #include <nuttx/semaphore.h>
 
-#ifdef CONFIG_PRIORITY_INHERITANCE
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -71,14 +69,19 @@ int sem_getprotocol(FAR sem_t *sem, FAR int *protocol)
 {
   DEBUGASSERT(sem != NULL && protocol != NULL);
 
+#ifdef CONFIG_PRIORITY_INHERITANCE
   if ((sem->flags & PRIOINHERIT_FLAGS_DISABLE) != 0)
     {
-      return SEM_PRIO_NONE;
+      *protocol = SEM_PRIO_NONE;
     }
   else
     {
-      return SEM_PRIO_INHERIT;
+      *protocol = SEM_PRIO_INHERIT;
     }
-}
 
-#endif /* CONFIG_PRIORITY_INHERITANCE */
+#else
+  *protocol = SEM_PRIO_NONE;
+#endif
+
+  return OK;
+}
diff --git a/sched/semaphore/Make.defs b/sched/semaphore/Make.defs
index 7eb1740424..93fd35a0d0 100644
--- a/sched/semaphore/Make.defs
+++ b/sched/semaphore/Make.defs
@@ -37,10 +37,10 @@
 
 CSRCS += sem_destroy.c sem_wait.c sem_trywait.c sem_tickwait.c
 CSRCS += sem_timedwait.c sem_timeout.c sem_post.c sem_recover.c
-CSRCS += sem_reset.c sem_waitirq.c
+CSRCS += sem_reset.c sem_setprotocol.c sem_waitirq.c
 
 ifeq ($(CONFIG_PRIORITY_INHERITANCE),y)
-CSRCS += sem_initialize.c sem_holder.c sem_setprotocol.c
+CSRCS += sem_initialize.c sem_holder.c
 endif
 
 ifeq ($(CONFIG_SPINLOCK),y)
diff --git a/sched/semaphore/sem_setprotocol.c b/sched/semaphore/sem_setprotocol.c
index 1350206941..6f4392bcce 100644
--- a/sched/semaphore/sem_setprotocol.c
+++ b/sched/semaphore/sem_setprotocol.c
@@ -46,8 +46,6 @@
 
 #include "semaphore/semaphore.h"
 
-#ifdef CONFIG_PRIORITY_INHERITANCE
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/
@@ -97,6 +95,7 @@ int sem_setprotocol(FAR sem_t *sem, int protocol)
   switch (protocol)
     {
       case SEM_PRIO_NONE:
+#ifdef CONFIG_PRIORITY_INHERITANCE
         /* Disable priority inheritance */
 
         sem->flags |= PRIOINHERIT_FLAGS_DISABLE;
@@ -104,13 +103,16 @@ int sem_setprotocol(FAR sem_t *sem, int protocol)
         /* Remove any current holders */
 
         sem_destroyholder(sem);
+#endif
         return OK;
 
       case SEM_PRIO_INHERIT:
+#ifdef CONFIG_PRIORITY_INHERITANCE
         /* Enable priority inheritance (dangerous) */
 
         sem->flags &= ~PRIOINHERIT_FLAGS_DISABLE;
         return OK;
+#endif
 
       case SEM_PRIO_PROTECT:
         /* Not yet supported */
@@ -126,5 +128,3 @@ int sem_setprotocol(FAR sem_t *sem, int protocol)
   set_errno(errcode);
   return ERROR;
 }
-
-#endif /* CONFIG_PRIORITY_INHERITANCE */
diff --git a/syscall/syscall.csv b/syscall/syscall.csv
index 8ecf52854f..99071ea27d 100644
--- a/syscall/syscall.csv
+++ b/syscall/syscall.csv
@@ -118,7 +118,7 @@
 "sem_destroy","semaphore.h","","int","FAR sem_t*"
 "sem_open","semaphore.h","defined(CONFIG_FS_NAMED_SEMAPHORES)","FAR sem_t*","FAR const char*","int","..."
 "sem_post","semaphore.h","","int","FAR sem_t*"
-"sem_setprotocol","nuttx/semaphore.h","defined(CONFIG_PRIORITY_INHERITANCE)","int","FAR sem_t*","int"
+"sem_setprotocol","nuttx/semaphore.h","","int","FAR sem_t*","int"
 "sem_timedwait","semaphore.h","","int","FAR sem_t*","FAR const struct timespec *"
 "sem_trywait","semaphore.h","","int","FAR sem_t*"
 "sem_unlink","semaphore.h","defined(CONFIG_FS_NAMED_SEMAPHORES)","int","FAR const char*"