diff --git a/History.txt b/History.txt
index 8827e9b3c..1cfc6750d 100644
--- a/History.txt
+++ b/History.txt
@@ -971,7 +971,7 @@ Changes between V7.4.2 and V7.5.0 released July 19 2013
 	+ Microsemi SmartFusion2
 
 	New FreeRTOSConfig.h settings
-	https://freertos.org/Documentation/RTOS_book.html
+	https://freertos.org/a00110.html
 
 	+ configUSE_TIME_SLICING
 	+ configUSE_NEWLIB_REENTRANT