diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index 040012581087..207ffe4a62e7 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -757,8 +757,8 @@ TAILQ_HEAD(sysctl_ctx_list, sysctl_ctx_entry);
 /* Oid for an array of counter(9)s.  The pointer and length must be non zero. */
 #define	SYSCTL_COUNTER_U64_ARRAY(parent, nbr, name, access, ptr, len, descr) \
 	SYSCTL_OID(parent, nbr, name,					\
-	    CTLTYPE_OPAQUE | CTLFLAG_MPSAFE | CTLFLAG_STATS | (access),	\
-	    (ptr), (len), sysctl_handle_counter_u64_array, "S", descr);	\
+	    CTLTYPE_U64 | CTLFLAG_MPSAFE | CTLFLAG_STATS | (access),	\
+	    (ptr), (len), sysctl_handle_counter_u64_array, "QU", descr);\
 	CTASSERT((((access) & CTLTYPE) == 0 ||				\
 	    ((access) & SYSCTL_CT_ASSERT_MASK) == CTLTYPE_OPAQUE) &&	\
 	    sizeof(counter_u64_t) == sizeof(*(ptr)) &&			\