1 files changed, 13 insertions, 11 deletions
diff --git a/cpukit/posix/src/mutextrylock.c b/cpukit/posix/src/mutextrylock.c
index d029ae5de6..895f38fa44 100644
--- a/cpukit/posix/src/mutextrylock.c
+++ b/cpukit/posix/src/mutextrylock.c
@@ -18,14 +18,7 @@
 #include "config.h"
 #endif
 
-#include <errno.h>
-#include <pthread.h>
-
-#include <rtems/system.h>
-#include <rtems/score/coremuteximpl.h>
-#include <rtems/score/watchdog.h>
 #include <rtems/posix/muteximpl.h>
-#include <rtems/posix/priorityimpl.h>
 
 /**
  * 11.3.3 Locking and Unlocking a Mutex, P1003.1c/Draft 10, p. 93
@@ -36,8 +29,17 @@ int pthread_mutex_trylock(
   pthread_mutex_t           *mutex
 )
 {
-  int r = _POSIX_Mutex_Lock_support( mutex, false, WATCHDOG_NO_TIMEOUT );
-  if ( r == EDEADLK )
-    r = EBUSY;
-  return r;
+  int eno;
+
+  eno = _POSIX_Mutex_Lock_support(
+    mutex,
+    (const struct timespec *) POSIX_MUTEX_ABSTIME_TRY_LOCK,
+    NULL
+  );
+
+  if ( eno == EDEADLK ) {
+    eno = EBUSY;
+  }
+
+  return eno;
 }