diff --git a/common_sparc.h b/common_sparc.h
index f99972db9..85e29fffa 100644
--- a/common_sparc.h
+++ b/common_sparc.h
@@ -41,6 +41,7 @@
 
 #define MB	__asm__ __volatile__ ("nop")
 #define WMB	__asm__ __volatile__ ("nop")
+#define RMB	__asm__ __volatile__ ("nop")
 
 #ifndef ASSEMBLER