diff --git a/doc/USAGE b/doc/USAGE
index cd7b75a..018c37a 100644
--- a/doc/USAGE
+++ b/doc/USAGE
@@ -306,7 +306,7 @@ Allocation failure:
 
     memory-error
 
-16. WHAT YOU DO NOT NEED TO LEARN YET
+15. WHAT YOU DO NOT NEED TO LEARN YET
 --------------------------------------
 
 You do not need CRUM, POOM, Granfilade, Spanfilade, WID, DISP, orgl, loaf, or
@@ -321,7 +321,7 @@ The right mental model for this package is simply:
 
     tumbler -> path through an enfilade -> datum(s)
 
-15. REFERENCES
+16. REFERENCES
 --------------
 
 Immediate behavioral reference: