diff --git a/src/main/scala/vexriscv/plugin/MmuPlugin.scala b/src/main/scala/vexriscv/plugin/MmuPlugin.scala
index 682ab74..cc98e10 100644
--- a/src/main/scala/vexriscv/plugin/MmuPlugin.scala
+++ b/src/main/scala/vexriscv/plugin/MmuPlugin.scala
@@ -110,7 +110,7 @@ class MmuPlugin(virtualRange : UInt => Bool,
         val requireMmuLockup = virtualRange(port.bus.cmd.virtualAddress) && !port.bus.cmd.bypassTranslation && csr.satp.mode
         if(!allowMachineModeMmu) {
           requireMmuLockup clearWhen(!csr.status.mprv && privilegeService.isMachine())
-          if(port.priority == MmuPort.PRIORITY_DATA) requireMmuLockup clearWhen(csr.status.mprv && pipeline(config.MPP) === 3)
+          if(port.priority != MmuPort.PRIORITY_DATA) requireMmuLockup clearWhen(csr.status.mprv && pipeline(config.MPP) === 3)
         }
 
         when(requireMmuLockup) {