diff --git a/ChangeLog b/ChangeLog
index db031c3744..d7fb240454 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -489,6 +489,7 @@
 	* Initial USB serial class device side driver check in (not well tested at initial checkin)
 	* Add LPC214x USB serial configuration; Add examples/usbserial test (still a work in progress)
 	* Added USB device side driver for the DM320 (untested at initial checkin)
+	* Fixed an error in a previous (post 0.3.15) check-in that broke the LPC214x system timer.
 
 
 
diff --git a/Documentation/NuttX.html b/Documentation/NuttX.html
index 57e9e3dfbd..ac64d72044 100644
--- a/Documentation/NuttX.html
+++ b/Documentation/NuttX.html
@@ -1079,6 +1079,7 @@ nuttx-0.3.16 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 	* Initial USB serial class device side driver check in (not well tested at initial checkin)
 	* Add LPC214x USB serial configuration; Add examples/usbserial test (still a work in progress)
 	* Added USB device side driver for the DM320 (untested at initial checkin)
+	* Fixed an error in a previous (post 0.3.15) check-in that broke the LPC214x system timer.
 
 pascal-0.1.3 2008-xx-xx Gregory Nutt <spudmonkey@racsa.co.cr>
 
diff --git a/arch/arm/src/lpc214x/lpc214x_timerisr.c b/arch/arm/src/lpc214x/lpc214x_timerisr.c
index 4a7bbb6c4f..1c6b9c69af 100644
--- a/arch/arm/src/lpc214x/lpc214x_timerisr.c
+++ b/arch/arm/src/lpc214x/lpc214x_timerisr.c
@@ -59,7 +59,7 @@
  */
 
 #define LPC214X_CCLKFREQ  (LPC214X_FOSC*LPC214X_PLL_M)
-#define LPC214X_PCLKFREQ  (LPC214X_CCLKFREQ/LPC214X_APBDIV)
+#define LPC214X_PCLKFREQ  (LPC214X_CCLKFREQ/LPC214X_APB_DIV)
 
 #define tmr_getreg8(o)    getreg8(LPC214X_TMR0_BASE+(o))
 #define tmr_getreg16(o)   getreg16(LPC214X_TMR0_BASE+(o))