diff --git a/sys/x86/x86/intr_machdep.c b/sys/x86/x86/intr_machdep.c
index 86dde2d25db2..f8be4b6712d0 100644
--- a/sys/x86/x86/intr_machdep.c
+++ b/sys/x86/x86/intr_machdep.c
@@ -750,7 +750,7 @@ sysctl_hw_intrs(SYSCTL_HANDLER_ARGS)
 	sbuf_delete(&sbuf);
 	return (error);
 }
-SYSCTL_PROC(_hw, OID_AUTO, intrs, CTLTYPE_STRING | CTLFLAG_RW,
+SYSCTL_PROC(_hw, OID_AUTO, intrs, CTLTYPE_STRING | CTLFLAG_RD,
     0, 0, sysctl_hw_intrs, "A", "interrupt:number @cpu: count");
 
 /*