diff --git a/sys/powerpc/include/interrupt.h b/sys/powerpc/include/interrupt.h
index 7f009fdc201118..6a8d7357a1b63b 100644
--- a/sys/powerpc/include/interrupt.h
+++ b/sys/powerpc/include/interrupt.h
@@ -28,6 +28,12 @@
 #ifndef	__MACHINE_INTERRUPT_H__
 #define	__MACHINE_INTERRUPT_H__
 
+/* FreeBSD standard interrupt controller interface */
+
+typedef struct powerpc_intr interrupt_t;
+
+/* FreeBSD standard interrupt controller interface */
+
 #define	INTR_VECTORS	256
 
 #define	MAX_PICS		32
diff --git a/sys/sys/intr.h b/sys/sys/intr.h
index 5d46a4aba50bf4..2403ff7c90f959 100644
--- a/sys/sys/intr.h
+++ b/sys/sys/intr.h
@@ -39,6 +39,12 @@
 
 #include <sys/systm.h>
 
+/* FreeBSD standard interrupt controller interface */
+
+typedef struct intr_irqsrc interrupt_t;
+
+/* FreeBSD standard interrupt controller interface */
+
 #define	INTR_IRQ_INVALID	0xFFFFFFFF
 
 enum intr_map_data_type {
diff --git a/sys/x86/include/interrupt.h b/sys/x86/include/interrupt.h
index d7bfcdc126a9e4..0729e254a4b5be 100644
--- a/sys/x86/include/interrupt.h
+++ b/sys/x86/include/interrupt.h
@@ -30,6 +30,12 @@
 
 #ifdef _KERNEL
 
+/* FreeBSD standard interrupt controller interface */
+
+typedef struct intsrc interrupt_t;
+
+/* FreeBSD standard interrupt controller interface */
+
 /*
  * Values used in determining the allocation of IRQ values among
  * different types of I/O interrupts.  These values are used as