diff --git a/c/src/libchip/rtc/ds1375-rtc.h b/c/src/libchip/rtc/ds1375-rtc.h
index 99100b8b07..8741fe33d0 100644
--- a/c/src/libchip/rtc/ds1375-rtc.h
+++ b/c/src/libchip/rtc/ds1375-rtc.h
@@ -1,5 +1,7 @@
 #ifndef DS1375_I2C_RTC_H
 #define DS1375_I2C_RTC_H
+/* $Id$ */
+
 /* Driver for the Maxim 1375 i2c RTC (TOD only; very simple...) */
 
 /* 
diff --git a/c/src/libchip/rtc/ds1375.c b/c/src/libchip/rtc/ds1375.c
index 5859190d50..25d0f93b46 100644
--- a/c/src/libchip/rtc/ds1375.c
+++ b/c/src/libchip/rtc/ds1375.c
@@ -1,3 +1,5 @@
+/* $Id$ */
+
 /* Driver for the Maxim 1375 i2c RTC (TOD only; very simple...) */
 
 /*