diff --git a/vec-into-iter.md b/vec-into-iter.md
index 566cad7..0ffc23c 100644
--- a/vec-into-iter.md
+++ b/vec-into-iter.md
@@ -63,7 +63,7 @@ However because `offset` is marked as a GEP inbounds instruction, this will tell
 LLVM that ptr is allocated and won't alias other allocated memory. This is fine
 for zero-sized types, as they can't alias anything. However if we're using
 `heap::EMPTY` as a sentinel for a non-allocation for a *non-zero-sized* type,
-this can cause undefined behaviour. Alas, we must therefore special case either
+this can cause Undefined Behaviour. Alas, we must therefore special case either
 cap or len being 0 to not do the offset.
 
 So this is what we end up with for initialization: