diff --git a/include/kernel-version.mk b/include/kernel-version.mk
index c26581259c..dde35a0aa7 100644
--- a/include/kernel-version.mk
+++ b/include/kernel-version.mk
@@ -13,9 +13,6 @@ endif
 ifeq ($(LINUX_VERSION),2.6.21.7)
   LINUX_KERNEL_MD5SUM:=bc15fad1487336d5dcb0945cd039d8ed
 endif
-ifeq ($(LINUX_VERSION),2.6.23.17)
-  LINUX_KERNEL_MD5SUM:=a0300a393ac91ce9c64bf31522b45e2e
-endif
 ifeq ($(LINUX_VERSION),2.6.25.20)
   LINUX_KERNEL_MD5SUM:=0da698edccf03e2235abc2830a495114
 endif