diff --git a/libc-top-half/musl/include/pthread.h b/libc-top-half/musl/include/pthread.h
index b14fe826d..05101e8eb 100644
--- a/libc-top-half/musl/include/pthread.h
+++ b/libc-top-half/musl/include/pthread.h
@@ -55,15 +55,9 @@ extern "C" {
 #define PTHREAD_PROCESS_SHARED 1
 
 
-#if defined(__wasilibc_unmodified_upstream) || defined(_REENTRANT)
 #define PTHREAD_MUTEX_INITIALIZER {{{0}}}
 #define PTHREAD_RWLOCK_INITIALIZER {{{0}}}
 #define PTHREAD_COND_INITIALIZER {{{0}}}
-#else
-#define PTHREAD_MUTEX_INITIALIZER 0
-#define PTHREAD_RWLOCK_INITIALIZER 0
-#define PTHREAD_COND_INITIALIZER 0
-#endif
 #define PTHREAD_ONCE_INIT 0