diff --git a/c/src/lib/libbsp/powerpc/dmv177/include/dmv170.h b/c/src/lib/libbsp/powerpc/dmv177/include/dmv170.h
index f9c824b16f..3d3b1281e6 100644
--- a/c/src/lib/libbsp/powerpc/dmv177/include/dmv170.h
+++ b/c/src/lib/libbsp/powerpc/dmv177/include/dmv170.h
@@ -44,8 +44,7 @@ extern "C" {
 /* Note:  Move address defs to the linker files. XXX */
 
 /* Real Time Clock Base Address */
-#define DMV170_RTC_BASE_ADDRESS   0xf2c00000
-#define DMV170_RTC_ADDRESS        0xf2c01ff8
+#define DMV170_RTC_ADDRESS   0xf2c00000
 
 /* base address of the DUART (68681) */
 #define MC68681_ADDR         0xf2800000