diff --git a/libc/pthread/pthread_condattr_init.c b/libc/pthread/pthread_condattr_init.c
index 7f5602ce761..8532bc9a612 100644
--- a/libc/pthread/pthread_condattr_init.c
+++ b/libc/pthread/pthread_condattr_init.c
@@ -81,5 +81,3 @@ int pthread_condattr_init(FAR pthread_condattr_t *attr)
   linfo("Returning %d\n", ret);
   return ret;
 }
-
-
diff --git a/libc/pthread/pthread_mutexattr_init.c b/libc/pthread/pthread_mutexattr_init.c
index 01c3bb867d1..f1b6bca9c7c 100644
--- a/libc/pthread/pthread_mutexattr_init.c
+++ b/libc/pthread/pthread_mutexattr_init.c
@@ -1,7 +1,7 @@
 /****************************************************************************
  * libc/pthread/pthread_mutexattr_init.c
  *
- *   Copyright (C) 2007-2009, 2011 Gregory Nutt. All rights reserved.
+ *   Copyright (C) 2007-2009, 2011, 2017 Gregory Nutt. All rights reserved.
  *   Author: Gregory Nutt <gnutt@nuttx.org>
  *
  * Redistribution and use in source and binary forms, with or without
@@ -76,6 +76,9 @@ int pthread_mutexattr_init(FAR pthread_mutexattr_t *attr)
   else
     {
       attr->pshared = 0;
+#ifdef CONFIG_PRIORITY_INHERITANCE
+      attr->proto   = SEM_PRIO_INHERIT;
+#endif
 #ifdef CONFIG_MUTEX_TYPES
       attr->type    = PTHREAD_MUTEX_DEFAULT;
 #endif