diff --git a/spec/design_topics/array_ducktyping.md b/spec/design_topics/array_ducktyping.md
deleted file mode 100644
index 148ebceae..000000000
--- a/spec/design_topics/array_ducktyping.md
+++ /dev/null
@@ -1 +0,0 @@
-# Array duck typing
diff --git a/spec/design_topics/index.rst b/spec/design_topics/index.rst
index 9cc92be11..401b0b1c3 100644
--- a/spec/design_topics/index.rst
+++ b/spec/design_topics/index.rst
@@ -9,7 +9,6 @@ Design topics & constraints
    eager_lazy_eval
    parallelism
    static_typing
-   array_ducktyping
    data_interchange
    accuracy
    device_support