diff --git a/src/core/diags/README.md b/src/core/diags/README.md
index 51c883ac2..2dc027918 100644
--- a/src/core/diags/README.md
+++ b/src/core/diags/README.md
@@ -12,7 +12,7 @@ The diagnostics module supports common diagnostics features that are listed belo
 - [diag power](#diag-power)
 - [diag send](#diag-send-packets-length)
 - [diag repeat](#diag-repeat-delay-length)
-- [diag radio](#diag-radio)
+- [diag radio](#diag-radio-sleep)
 - [diag stats](#diag-stats)
 - [diag stop](#diag-stop)