diff --git a/emulator.c b/emulator.c
index 9081085..e6a7c6b 100644
--- a/emulator.c
+++ b/emulator.c
@@ -76,8 +76,9 @@ void *iplThread(void *args) {
   printf("IPL thread running\n");
 
   while (1) {
-    if (!gpio_get_irq() && irq == 0) {
-      irq = 1;
+    if (!gpio_get_irq()) {
+      if (irq == 0)
+        irq = 1;
       m68k_end_timeslice();
     }