diff --git a/compiler/rustc_llvm/build.rs b/compiler/rustc_llvm/build.rs
index ed1e8771323..4b0c1229da1 100644
--- a/compiler/rustc_llvm/build.rs
+++ b/compiler/rustc_llvm/build.rs
@@ -102,7 +102,7 @@ fn output(cmd: &mut Command) -> String {
 
 fn main() {
     for component in REQUIRED_COMPONENTS.iter().chain(OPTIONAL_COMPONENTS.iter()) {
-        println!("cargo:rustc-check-cfg=values(llvm_component,\"{component}\")");
+        println!("cargo:rustc-check-cfg=cfg(llvm_component,values(\"{component}\"))");
     }
 
     if tracked_env_var_os("RUST_CHECK").is_some() {