diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs
index 3c42eb21d074..ed0d853e7156 100644
--- a/compiler/rustc_codegen_llvm/src/lib.rs
+++ b/compiler/rustc_codegen_llvm/src/lib.rs
@@ -8,7 +8,7 @@
 #![feature(rustdoc_internals)]
 #![doc(rust_logo)]
 #![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
-#![cfg_attr(bootstrap, feature(c_str_literals))]
+#![feature(c_str_literals)]
 #![feature(exact_size_is_empty)]
 #![feature(extern_types)]
 #![feature(hash_raw_entry)]
diff --git a/library/std/src/lib.rs b/library/std/src/lib.rs
index 76081833e05e..34b381b6c836 100644
--- a/library/std/src/lib.rs
+++ b/library/std/src/lib.rs
@@ -308,7 +308,7 @@
 //
 // Library features (core):
 // tidy-alphabetical-start
-#![cfg_attr(bootstrap, feature(c_str_literals))]
+#![feature(c_str_literals)]
 #![feature(char_internals)]
 #![feature(core_intrinsics)]
 #![feature(core_io_borrowed_buf)]
diff --git a/tests/ui-fulldeps/stable-mir/check_allocation.rs b/tests/ui-fulldeps/stable-mir/check_allocation.rs
index 7ce3597206b6..b13f76452fe0 100644
--- a/tests/ui-fulldeps/stable-mir/check_allocation.rs
+++ b/tests/ui-fulldeps/stable-mir/check_allocation.rs
@@ -12,6 +12,7 @@
 #![feature(assert_matches)]
 #![feature(control_flow_enum)]
 #![feature(ascii_char, ascii_char_variants)]
+#![feature(c_str_literals)]
 
 extern crate rustc_hir;
 extern crate rustc_middle;
@@ -239,6 +240,7 @@ fn generate_input(path: &str) -> std::io::Result<()> {
         file,
         r#"
     #![feature(core_intrinsics)]
+    #![feature(c_str_literals)]
     use std::intrinsics::type_id;
 
     static LEN: usize = 2;