diff --git a/src/bootstrap/src/core/builder/tests.rs b/src/bootstrap/src/core/builder/tests.rs
index 7c2e29b82f6a..baa22fc7f72a 100644
--- a/src/bootstrap/src/core/builder/tests.rs
+++ b/src/bootstrap/src/core/builder/tests.rs
@@ -254,19 +254,6 @@ fn ci_rustc_if_unchanged_invalidate_on_compiler_changes() {
     });
 }
 
-#[test]
-fn ci_rustc_if_unchanged_invalidate_on_library_changes_in_ci() {
-    git_test(|ctx| {
-        prepare_rustc_checkout(ctx);
-        ctx.create_upstream_merge(&["compiler/bar"]);
-        // This change should invalidate download-ci-rustc
-        ctx.create_nonupstream_merge(&["library/foo"]);
-
-        let config = parse_config_download_rustc_at(ctx.get_path(), "if-unchanged", true);
-        assert_eq!(config.download_rustc_commit, None);
-    });
-}
-
 #[test]
 fn ci_rustc_if_unchanged_do_not_invalidate_on_library_changes_outside_ci() {
     git_test(|ctx| {
diff --git a/src/bootstrap/src/core/config/config.rs b/src/bootstrap/src/core/config/config.rs
index f0e8e9df9e35..4c8862dc7098 100644
--- a/src/bootstrap/src/core/config/config.rs
+++ b/src/bootstrap/src/core/config/config.rs
@@ -45,7 +45,7 @@ use crate::utils::helpers::{self, exe, output, t};
 /// final output/compiler, which can be significantly affected by changes made to the bootstrap sources.
 #[rustfmt::skip] // We don't want rustfmt to oneline this list
 pub(crate) const RUSTC_IF_UNCHANGED_ALLOWED_PATHS: &[&str] = &[
-    "!library",
+    ":!library",
     ":!src/tools",
     ":!src/librustdoc",
     ":!src/rustdoc-json-types",