diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index 260ae5b87..6fb06fbbd 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -46,6 +46,9 @@ typedef struct {
 
 typedef long pthread_mutexattr_t;
 
+#define  PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP  PTHREAD_RECURSIVE_MUTEX_INITIALIZER
+#define  PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP PTHREAD_ERRORCHECK_MUTEX_INITIALIZER
+
 enum {
     PTHREAD_MUTEX_NORMAL = 0,
     PTHREAD_MUTEX_RECURSIVE = 1,