diff --git a/linuxthreads/sysdeps/mips/pt-machine.h b/linuxthreads/sysdeps/mips/pt-machine.h
index 368235e1a5..65f02a5aa7 100644
--- a/linuxthreads/sysdeps/mips/pt-machine.h
+++ b/linuxthreads/sysdeps/mips/pt-machine.h
@@ -27,9 +27,6 @@
 # define PT_EI extern inline
 #endif
 
-/* Memory barrier.  */
-#define MEMORY_BARRIER() __asm__ ("" : : : "memory")
-
 
 /* Spinlock implementation; required.  */