diff --git a/mesh/crypto.c b/mesh/crypto.c
index df597bb..9953659 100644
--- a/mesh/crypto.c
+++ b/mesh/crypto.c
@@ -1038,7 +1038,7 @@ bool mesh_crypto_check_avail()
 			uint8_t data[20];
 			uint8_t mic[8];
 		} crypto;
-		uint8_t bytes[0];
+		uint8_t bytes[73];
 	} u;
 	uint8_t out_msg[sizeof(u.crypto.data) + sizeof(u.crypto.mic)];
 
diff --git a/mesh/mesh-config-json.c b/mesh/mesh-config-json.c
index 97267b6..7362112 100644
--- a/mesh/mesh-config-json.c
+++ b/mesh/mesh-config-json.c
@@ -1980,7 +1980,7 @@ bool mesh_config_model_sub_del_all(struct mesh_config *cfg, uint16_t addr,
 bool mesh_config_write_seq_number(struct mesh_config *cfg, uint32_t seq,
 								bool cache)
 {
-	int value;
+	int value = 0;
 	uint32_t cached = 0;
 
 	if (!cfg)