2 files changed, 7 insertions, 1 deletions
diff --git a/cpukit/rtems/include/rtems/rtems/sem.h b/cpukit/rtems/include/rtems/rtems/sem.h
index fe74f44dfa..220b0e392e 100644
--- a/cpukit/rtems/include/rtems/rtems/sem.h
+++ b/cpukit/rtems/include/rtems/rtems/sem.h
@@ -83,7 +83,7 @@ typedef struct {
      *  This is the SuperCore Mutex instance associated with this Classic
      *  API Semaphore instance.
      */
-    CORE_mutex_Control     mutex;
+    CORE_ceiling_mutex_Control Mutex;
 
     /**
      *  This is the SuperCore Semaphore instance associated with this Classic
diff --git a/cpukit/rtems/include/rtems/rtems/semimpl.h b/cpukit/rtems/include/rtems/rtems/semimpl.h
index f3dfa0213a..5b789d627d 100644
--- a/cpukit/rtems/include/rtems/rtems/semimpl.h
+++ b/cpukit/rtems/include/rtems/rtems/semimpl.h
@@ -26,8 +26,14 @@
 extern "C" {
 #endif
 
+/**
+ * @brief Classic semaphore variants.
+ *
+ * Must be in synchronization with Semaphore_Control::variant.
+ */
 typedef enum {
   SEMAPHORE_VARIANT_MUTEX,
+  SEMAPHORE_VARIANT_MUTEX_NO_PROTOCOL,
   SEMAPHORE_VARIANT_SIMPLE_BINARY,
   SEMAPHORE_VARIANT_COUNTING
 #if defined(RTEMS_SMP)