diff --git a/16_1_Setting_Up_Libwally.md b/16_1_Setting_Up_Libwally.md
index fcb9328..79c869b 100644
--- a/16_1_Setting_Up_Libwally.md
+++ b/16_1_Setting_Up_Libwally.md
@@ -128,7 +128,7 @@ wally_cleanup(0);
 ```
 In both cases, the argument is for flags, but is currently set to `0`.
 
-### Testing a Test Libwally Program
+## Testing a Test Libwally Program
 
 The src directory contains [testwally.c](src/16_1_testwally.c), which just shows how the initialize and cleanup functions work.