1 files changed, 3 insertions, 2 deletions
diff --git a/libc/src/pthread/pthread_join.cpp b/libc/src/pthread/pthread_join.cpp
index 8d4c2dd46c47..78f99655e501 100644
--- a/libc/src/pthread/pthread_join.cpp
+++ b/libc/src/pthread/pthread_join.cpp
@@ -9,11 +9,12 @@
 #include "pthread_join.h"
 
 #include "src/__support/common.h"
+#include "src/__support/macros/config.h"
 #include "src/__support/threads/thread.h"
 
 #include <pthread.h> // For pthread_* type definitions.
 
-namespace LIBC_NAMESPACE {
+namespace LIBC_NAMESPACE_DECL {
 
 static_assert(sizeof(pthread_t) == sizeof(LIBC_NAMESPACE::Thread),
               "Mismatch between pthread_t and internal Thread.");
@@ -24,4 +25,4 @@ LLVM_LIBC_FUNCTION(int, pthread_join, (pthread_t th, void **retval)) {
   return result;
 }
 
-} // namespace LIBC_NAMESPACE
+} // namespace LIBC_NAMESPACE_DECL