diff --git a/libseckey/sk_ep11.c b/libseckey/sk_ep11.c
index e3bd3c9f..8b166873 100644
--- a/libseckey/sk_ep11.c
+++ b/libseckey/sk_ep11.c
@@ -1501,6 +1501,9 @@ int SK_EP11_reencipher_key(const struct sk_ext_ep11_lib *ep11_lib,
 		return -ENODEV;
 	}
 
+	memset(&rb, 0, sizeof(rb));
+	memset(&lrb, 0, sizeof(lrb));
+
 	rb.domain = domain;
 	lrb.domain = domain;
 
diff --git a/zkey/ep11.c b/zkey/ep11.c
index df8b57df..76c72a09 100644
--- a/zkey/ep11.c
+++ b/zkey/ep11.c
@@ -403,6 +403,9 @@ static int ep11_adm_reencrypt(struct ep11_lib *ep11, target_t target,
 		return -EINVAL;
 	}
 
+	memset(&rb, 0, sizeof(rb));
+	memset(&lrb, 0, sizeof(lrb));
+
 	rb.domain = domain;
 	lrb.domain = domain;