diff --git a/sys/powerpc/aim/trap.c b/sys/powerpc/aim/trap.c
index 8276e96f1936..354c63be4f69 100644
--- a/sys/powerpc/aim/trap.c
+++ b/sys/powerpc/aim/trap.c
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/syscall.h>
 #include <sys/sysent.h>
 #include <sys/systm.h>
+#include <sys/kernel.h>
 #include <sys/uio.h>
 #include <sys/signalvar.h>
 #include <sys/vmmeter.h>