diff --git a/sys/net/altq/altq_cbq.h b/sys/net/altq/altq_cbq.h
--- a/sys/net/altq/altq_cbq.h
+++ b/sys/net/altq/altq_cbq.h
@@ -119,7 +119,7 @@
 #define	CBQ_TIMEOUT		10
 #define	CBQ_LS_TIMEOUT		(20 * hz / 1000)
 
-#define	CBQ_MAX_CLASSES	256
+#define	CBQ_MAX_CLASSES	2048
 
 /*
  * Define State structures.
diff --git a/sys/net/altq/altq_hfsc.h b/sys/net/altq/altq_hfsc.h
--- a/sys/net/altq/altq_hfsc.h
+++ b/sys/net/altq/altq_hfsc.h
@@ -60,7 +60,7 @@
 
 /* special class handles */
 #define	HFSC_NULLCLASS_HANDLE	0
-#define	HFSC_MAX_CLASSES	64
+#define	HFSC_MAX_CLASSES	2048
 
 /* hfsc class flags */
 #define	HFCF_RED		0x0001	/* use RED */