diff --git a/src/vppinfra/crypto/aes_cbc.h b/src/vppinfra/crypto/aes_cbc.h
index 5c3054f..3f0f1f1 100644
--- a/src/vppinfra/crypto/aes_cbc.h
+++ b/src/vppinfra/crypto/aes_cbc.h
@@ -471,7 +471,7 @@
       for (i = 1; i < rounds; i++)
 	rl = aes_dec_round (rl, k[i]);
       rl = aes_dec_last_round (rl, k[i]);
-      *(u8x16 *) dst = rl ^ u8x32_extract_hi (f);
+      *(u8x16u *) dst = rl ^ u8x32_extract_hi (f);
     }
 }
 #endif