diff --git a/src/main/scala/rocket/RocketCore.scala b/src/main/scala/rocket/RocketCore.scala
index db3a48846e..20f9cf534e 100644
--- a/src/main/scala/rocket/RocketCore.scala
+++ b/src/main/scala/rocket/RocketCore.scala
@@ -382,7 +382,8 @@ class Rocket(tile: RocketTile)(implicit p: Parameters) extends CoreModule()(p)
     (id_ctrl.mul || id_ctrl.div) && !csr.io.status.isa('m'-'a') ||
     id_ctrl.amo && !csr.io.status.isa('a'-'a') ||
     id_ctrl.fp && (csr.io.decode(0).fp_illegal || (io.fpu.illegal_rm && !id_ctrl.vec)) ||
-    (id_ctrl.vec) && (csr.io.decode(0).vector_illegal || csr.io.vector.map(_.vconfig.vtype.vill).getOrElse(false.B)) ||
+    id_set_vconfig && csr.io.decode(0).vector_illegal ||
+    id_ctrl.vec && (csr.io.decode(0).vector_illegal || csr.io.vector.map(_.vconfig.vtype.vill).getOrElse(false.B)) ||
     id_ctrl.dp && !csr.io.status.isa('d'-'a') ||
     ibuf.io.inst(0).bits.rvc && !csr.io.status.isa('c'-'a') ||
     id_raddr2_illegal && id_ctrl.rxs2 ||