diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
index ce66dfc0e719..83a492c8d298 100644
--- a/arch/ia64/include/asm/io.h
+++ b/arch/ia64/include/asm/io.h
@@ -23,10 +23,6 @@
 #include <asm/unaligned.h>
 #include <asm/early_ioremap.h>
 
-/* We don't use IO slowdowns on the ia64, but.. */
-#define __SLOW_DOWN_IO	do { } while (0)
-#define SLOW_DOWN_IO	do { } while (0)
-
 #define __IA64_UNCACHED_OFFSET	RGN_BASE(RGN_UNCACHED)
 
 /*