diff --git a/book/src/07_threads/03_leak.md b/book/src/07_threads/03_leak.md
index 7f61a30c83..296b67090c 100644
--- a/book/src/07_threads/03_leak.md
+++ b/book/src/07_threads/03_leak.md
@@ -1,4 +1,4 @@
-# Leaking data
+# Leaking memory
 
 The main concern around passing references to spawned threads is use-after-free bugs:
 accessing data using a pointer to a memory region that's already been freed/de-allocated.\