diff --git a/minix/kernel/mqueue.h b/minix/kernel/mqueue.h
index 46a67cd16..e85607191 100644
--- a/minix/kernel/mqueue.h
+++ b/minix/kernel/mqueue.h
@@ -10,8 +10,8 @@
 #include <minix/type.h>
 
 #define MAX_RECEIVERS	4
-#define MAX_MESSAGES	64
-#define MAX_QUEUES	64
+#define MAX_MESSAGES	16
+#define MAX_QUEUES	16
 #define MAX_PAYLOAD	32
 #define NAME_SIZE	32
 #define DEFAULT_PRIO	0