diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c
index 5bed43d77ba..f998645f547 100644
--- a/sys/kern/kern_intr.c
+++ b/sys/kern/kern_intr.c
@@ -247,7 +247,7 @@ intr_event_update(struct intr_event *ie)
 }
 
 int
-intr_event_create(struct intr_event **event, void *source,int flags, int irq,
+intr_event_create(struct intr_event **event, void *source, int flags, int irq,
     void (*pre_ithread)(void *), void (*post_ithread)(void *),
     void (*post_filter)(void *), int (*assign_cpu)(void *, u_char),
     const char *fmt, ...)