diff --git a/src/include/86box/pci.h b/src/include/86box/pci.h
index e59268742..210ff1d4e 100644
--- a/src/include/86box/pci.h
+++ b/src/include/86box/pci.h
@@ -44,6 +44,7 @@
 #define PCI_MIRQ0 0
 #define PCI_MIRQ1 1
 #define PCI_MIRQ2 2
+#define PCI_MIRQ3 3
 
 #define PCI_IRQ_DISABLED -1
 
diff --git a/src/pci.c b/src/pci.c
index a8c76b003..5f1c48f50 100644
--- a/src/pci.c
+++ b/src/pci.c
@@ -59,7 +59,7 @@ static uint8_t		pci_pmc = 0, last_pci_card = 0, last_normal_pci_card = 0, last_p
 static uint8_t		pci_card_to_slot_mapping[256][32], pci_bus_number_to_index_mapping[256];
 static uint8_t		pci_irqs[16], pci_irq_level[16];
 static uint64_t		pci_irq_hold[16];
-static pci_mirq_t	pci_mirqs[3];
+static pci_mirq_t	pci_mirqs[4];
 static int		pci_type,
 			pci_switch,
 			pci_index,
@@ -446,7 +446,7 @@ pci_set_irq(uint8_t card, uint8_t pci_int)
     } else
 	pci_log("pci_set_irq(%02X, %02X): Using IRQ %i\n", card, pci_int, irq_line);
 
-    if (picint_is_level(irq_line) && (pci_irq_hold[irq_line] & (1ULL << slot))) {
+    if (level && (pci_irq_hold[irq_line] & (1ULL << slot))) {
 	/* IRQ already held, do nothing. */
 	pci_log("pci_set_irq(%02X, %02X): Card is already holding the IRQ\n", card, pci_int);
 	return;