diff --git a/book/en/src/SUMMARY.md b/book/en/src/SUMMARY.md
index 25aef811b9..a573cbb55a 100644
--- a/book/en/src/SUMMARY.md
+++ b/book/en/src/SUMMARY.md
@@ -21,5 +21,3 @@
   - [Ceiling analysis](./internals/ceilings.md)
   - [Software tasks](./internals/tasks.md)
   - [Timer queue](./internals/timer-queue.md)
-- [Homogeneous multi-core support](./homogeneous.md)
-- [Heterogeneous multi-core support](./heterogeneous.md)
diff --git a/book/en/src/heterogeneous.md b/book/en/src/heterogeneous.md
deleted file mode 100644
index d2c3d6c548..0000000000
--- a/book/en/src/heterogeneous.md
+++ /dev/null
@@ -1,6 +0,0 @@
-# Heterogeneous multi-core support
-
-This section covers the *experimental* heterogeneous multi-core support provided
-by RTIC behind the `heterogeneous` Cargo feature.
-
-**Content coming soon**
diff --git a/book/en/src/homogeneous.md b/book/en/src/homogeneous.md
deleted file mode 100644
index bcf6d2bef9..0000000000
--- a/book/en/src/homogeneous.md
+++ /dev/null
@@ -1,6 +0,0 @@
-# Homogeneous multi-core support
-
-This section covers the *experimental* homogeneous multi-core support provided
-by RTIC behind the `homogeneous` Cargo feature.
-
-**Content coming soon**