diff --git a/Makefile b/Makefile
index 405870b64..05e15d723 100644
--- a/Makefile
+++ b/Makefile
@@ -67,9 +67,9 @@ OBJS = kernel/version_$(GIT_REV).o
 # is just a symlink to your actual ABC working directory, as 'make mrproper'
 # will remove the 'abc' directory and you do not want to accidentally
 # delete your work on ABC..
-ABCREV = 61ad5f908c03
+ABCREV = 51705b168d7a
 ABCPULL = 1
-ABCMKARGS = # CC="$(CXX)" CXX="$(CXX)"
+ABCMKARGS = CC="$(CXX)" CXX="$(CXX)"
 
 define newline