diff --git a/ports/ChangeLog.microblaze b/ports/ChangeLog.microblaze
index 79658fb4d8..eb60f5b443 100644
--- a/ports/ChangeLog.microblaze
+++ b/ports/ChangeLog.microblaze
@@ -1,3 +1,8 @@
+2013-06-14  David Holsgrove <david.holsgrove@xilinx.com>
+
+	* sysdeps/unix/sysv/linux/microblaze/nptl/lowlevellock.h: Correct
+	return from macros.
+
 2013-06-05  Ondřej Bílka  <neleai@seznam.cz>
 
 	* sysdeps/microblaze/bits/atomic.h: Remove executable mode.
diff --git a/ports/sysdeps/unix/sysv/linux/microblaze/nptl/lowlevellock.h b/ports/sysdeps/unix/sysv/linux/microblaze/nptl/lowlevellock.h
index 45b8d9aa1b..70f5537e28 100644
--- a/ports/sysdeps/unix/sysv/linux/microblaze/nptl/lowlevellock.h
+++ b/ports/sysdeps/unix/sysv/linux/microblaze/nptl/lowlevellock.h
@@ -87,7 +87,7 @@
     __ret = INTERNAL_SYSCALL (futex, __err, 4, (long) (futexp),                \
                   __lll_private_flag (FUTEX_WAIT, private),                    \
                   (val), (timespec));                                          \
-    INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret;                  \
+    __ret;                                                                     \
   })
 
 #define lll_futex_timed_wait_bitset(futexp, val, timespec, clockbit, private)  \
@@ -99,7 +99,7 @@
                   __lll_private_flag (__op, private),                          \
                   (val), (timespec), NULL /* Unused.  */,                      \
                   FUTEX_BITSET_MATCH_ANY);                                     \
-    INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret;                  \
+    __ret;                                                                     \
   })
 
 #define lll_futex_wake(futexp, nr, private)                                    \
@@ -109,7 +109,7 @@
     __ret = INTERNAL_SYSCALL (futex, __err, 4, (long) (futexp),                \
                   __lll_private_flag (FUTEX_WAKE, private),                    \
                   (nr), 0);                                                    \
-    INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret;                  \
+    __ret;                                                                     \
   })
 
 #define lll_robust_dead(futexv, private)                                       \
@@ -160,7 +160,7 @@
     __ret = INTERNAL_SYSCALL (futex, __err, 5, (futexp),                       \
                   __lll_private_flag (__op, private),                          \
                   (val), (timespec), mutex);                                   \
-    INTERNAL_SYSCALL_ERROR_P (__ret, __err) ? -__ret : __ret;                  \
+    __ret;                                                                     \
   })
 
 #define lll_futex_cmp_requeue_pi(futexp, nr_wake, nr_move, mutex, val, priv)   \