diff --git a/include/net/flow.h b/include/net/flow.h
index 78113daadd63..2ec377d9ab9f 100644
--- a/include/net/flow.h
+++ b/include/net/flow.h
@@ -68,7 +68,7 @@ struct flowi4 {
 #define fl4_ipsec_spi		uli.spi
 #define fl4_mh_type		uli.mht.type
 #define fl4_gre_key		uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 static inline void flowi4_init_output(struct flowi4 *fl4, int oif,
 				      __u32 mark, __u8 tos, __u8 scope,
@@ -112,7 +112,7 @@ struct flowi6 {
 #define fl6_ipsec_spi		uli.spi
 #define fl6_mh_type		uli.mht.type
 #define fl6_gre_key		uli.gre_key
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 struct flowidn {
 	struct flowi_common	__fl_common;
@@ -127,7 +127,7 @@ struct flowidn {
 	union flowi_uli		uli;
 #define fld_sport		uli.ports.sport
 #define fld_dport		uli.ports.dport
-};
+} __attribute__((__aligned__(BITS_PER_LONG/8)));
 
 struct flowi {
 	union {