diff --git a/pcid/src/driver_interface/irq_helpers.rs b/pcid/src/driver_interface/irq_helpers.rs
index 7ed060bce0..28ca077a92 100644
--- a/pcid/src/driver_interface/irq_helpers.rs
+++ b/pcid/src/driver_interface/irq_helpers.rs
@@ -325,6 +325,7 @@ pub fn pci_allocate_interrupt_vector(
         // INTx# pin based interrupts.
         InterruptVector {
             irq_handle: irq.irq_handle(driver),
+            vector: 0,
             kind: InterruptVectorKind::Legacy,
         }
     } else {