diff --git a/15_2_Programming_Bitcoind_with_C.md b/15_2_Programming_Bitcoind_with_C.md
index 0da8900..1dcd416 100644
--- a/15_2_Programming_Bitcoind_with_C.md
+++ b/15_2_Programming_Bitcoind_with_C.md
@@ -1,8 +1,8 @@
-# 12.3: Programming Bitcoind with C
+# 15.2: Programming Bitcoind with C
 
 > **NOTE:** This is a draft in progress, so that I can get some feedback from early reviewers. It is not yet ready for learning.
 
-[§12.2](12_2_Accessing_Bitcoind_with_C.md) laid out the methodology for creating C programs based on RPC calls to `bitcoind`. We're now going to show the potential of that C programming by laying out a simplistic, first cut of an actual Bitcoin program.
+[§15.1](15_1_Accessing_Bitcoind_with_C.md) laid out the methodology for creating C programs based on RPC calls to `bitcoind`. We're now going to show the potential of that C programming by laying out a simplistic, first cut of an actual Bitcoin program.
 
 ## Plan for Your Code