diff --git a/src/doc/rustc-dev-guide/src/tests/headers.md b/src/doc/rustc-dev-guide/src/tests/headers.md
index 9d9251295841..f066dbbb5c88 100644
--- a/src/doc/rustc-dev-guide/src/tests/headers.md
+++ b/src/doc/rustc-dev-guide/src/tests/headers.md
@@ -70,7 +70,6 @@ found in [`header.rs`] from the compiletest source.
     * `min-llvm-versionX`
     * `min-system-llvm-version`
     * `ignore-llvm-version`
-    * `ignore-llvm-version`
 * [Environment variable headers](#environment-variable-headers)
     * `rustc-env`
     * `exec-env`