1 files changed, 3 insertions, 2 deletions
diff --git a/libc/src/__support/threads/linux/callonce.cpp b/libc/src/__support/threads/linux/callonce.cpp
index 24d376f447fb..c6e5f2aba69f 100644
--- a/libc/src/__support/threads/linux/callonce.cpp
+++ b/libc/src/__support/threads/linux/callonce.cpp
@@ -7,10 +7,11 @@
 //===----------------------------------------------------------------------===//
 
 #include "src/__support/threads/callonce.h"
+#include "src/__support/macros/config.h"
 #include "src/__support/threads/linux/callonce.h"
 #include "src/__support/threads/linux/futex_utils.h"
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 namespace callonce_impl {
 int callonce_slowpath(CallOnceFlag *flag, CallOnceCallback *func) {
   auto *futex_word = reinterpret_cast<Futex *>(flag);
@@ -36,4 +37,4 @@ int callonce_slowpath(CallOnceFlag *flag, CallOnceCallback *func) {
   return 0;
 }
 } // namespace callonce_impl
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL