diff --git a/docs/design-docs/heapprofd-design.md b/docs/design-docs/heapprofd-design.md
index fe5a8ef..005b0d3 100644
--- a/docs/design-docs/heapprofd-design.md
+++ b/docs/design-docs/heapprofd-design.md
@@ -182,6 +182,9 @@
 
 The sampling rate is configurable as part of the initial handshake. A sampling rate == 1 will degenerate into the fully-accurate high-overhead mode.
 
+See [Sampling for Memory Profiles](/docs/design-docs/heapprofd-sampling) for
+more details.
+
 Prior art: [crbug.com/812262](http://crbug.com/812262), [crbug.com/803276](http://crbug.com/803276).
 
 ## Implementation Plan