diff --git a/src/arch/i386/include/arch/pirq_routing.h b/src/arch/i386/include/arch/pirq_routing.h
index ecc288267d..174884d02f 100644
--- a/src/arch/i386/include/arch/pirq_routing.h
+++ b/src/arch/i386/include/arch/pirq_routing.h
@@ -18,9 +18,8 @@ struct irq_info {
 
 #if defined(CONFIG_IRQ_SLOT_COUNT)
 #define IRQ_SLOTS_COUNT CONFIG_IRQ_SLOT_COUNT
-#elif (__GNUC__ < 3)
-#define IRQ_SLOTS_COUNT 1
 #else
+#warning "No IRQ_SLOT_COUNT in Kconfig."
 #define IRQ_SLOTS_COUNT
 #endif