diff --git a/drivers/s390/cio/cio.h b/drivers/s390/cio/cio.h
index a01376ae1749..fdb87520543f 100644
--- a/drivers/s390/cio/cio.h
+++ b/drivers/s390/cio/cio.h
@@ -102,7 +102,7 @@ struct subchannel {
 	struct schib_config config;
 } __attribute__ ((aligned(8)));
 
-DECLARE_PER_CPU(struct irb, cio_irb);
+DECLARE_PER_CPU_ALIGNED(struct irb, cio_irb);
 
 #define to_subchannel(n) container_of(n, struct subchannel, dev)