diff --git a/libc/src/__support/OSUtil/baremetal/quick_exit.cpp b/libc/src/__support/OSUtil/baremetal/quick_exit.cpp
index f0971d4db352e0..5b6fcf42341ebb 100644
--- a/libc/src/__support/OSUtil/baremetal/quick_exit.cpp
+++ b/libc/src/__support/OSUtil/baremetal/quick_exit.cpp
@@ -9,7 +9,7 @@
 #include "src/__support/OSUtil/quick_exit.h"
 
 // This is intended to be provided by the vendor.
-[[noreturn]] extern "C" void __llvm_libc_quick_exit(int status);
+extern "C" [[noreturn]] void __llvm_libc_quick_exit(int status);
 
 namespace LIBC_NAMESPACE {