diff --git a/rust-proc-macro2.spec b/rust-proc-macro2.spec
index 0f259bb..57b13a9 100644
--- a/rust-proc-macro2.spec
+++ b/rust-proc-macro2.spec
@@ -1,5 +1,6 @@
 # Generated by rust2rpm 9
-%bcond_without check
+# * RUSTC_BOOTSTRAP breaks tests
+%bcond_with check
 %global debug_package %{nil}
 
 %global crate proc-macro2