diff --git a/TODO b/TODO
index d4ffbc4..edae61c 100644
--- a/TODO
+++ b/TODO
@@ -179,7 +179,7 @@
   allocation on the stack or the heap.  Unfortunately, we're not using it much.
   We need to audit our memory allocations and turn a lot of malloc/free calls
   into RESERVE_CONFIG_BUFFER/RELEASE_CONFIG_BUFFER.
-  For a start, see e.g. make CFLAGS_EXTRA=-Wlarger-than-64
+  For a start, see e.g. make EXTRA_CFLAGS=-Wlarger-than-64
 
   And while we're at it, many of the CONFIG_FEATURE_CLEAN_UP #ifdefs will be
   optimized out by the compiler in the stack allocation case (since there's no