diff --git a/lib/libc/include/namespace.h b/lib/libc/include/namespace.h
index 00c034e93d7a..f9f5fd775712 100644
--- a/lib/libc/include/namespace.h
+++ b/lib/libc/include/namespace.h
@@ -123,6 +123,7 @@
 #define		socket				_socket
 #define		socketpair			_socketpair
 #define		wait4				_wait4
+#define		waitpid				_waitpid
 #define		write				_write
 #define		writev				_writev
 
@@ -156,7 +157,6 @@
 #define		system				_system
 #define		tcdrain				_tcdrain
 #define		wait				_wait
-#define		waitpid				_waitpid
 #endif
 
 #endif /* _NAMESPACE_H_ */
diff --git a/lib/libc/include/un-namespace.h b/lib/libc/include/un-namespace.h
index 2809e0d0b1bc..4bf789dee2dc 100644
--- a/lib/libc/include/un-namespace.h
+++ b/lib/libc/include/un-namespace.h
@@ -105,6 +105,7 @@
 #undef		socket
 #undef		socketpair
 #undef		wait4
+#undef		waitpid
 #undef		write
 #undef		writev
 
@@ -130,7 +131,6 @@
 #undef		system
 #undef		tcdrain
 #undef		wait
-#undef		waitpid
 #endif	/* 0 */
 
 #ifdef _SIGNAL_H_