diff --git a/src/Mayaqua/Encrypt.c b/src/Mayaqua/Encrypt.c
index fed18bdbd..4b30488f9 100644
--- a/src/Mayaqua/Encrypt.c
+++ b/src/Mayaqua/Encrypt.c
@@ -775,6 +775,10 @@ BUF *BigNumToBuf(const BIGNUM *bn)
 
 	size = BN_num_bytes(bn);
 	tmp = ZeroMalloc(size);
+	if (tmp == NULL)
+	{
+		return NULL;
+	}
 	BN_bn2bin(bn, tmp);
 
 	b = NewBuf();
diff --git a/src/Mayaqua/Network.c b/src/Mayaqua/Network.c
index b170d130c..4d3c70527 100644
--- a/src/Mayaqua/Network.c
+++ b/src/Mayaqua/Network.c
@@ -5803,7 +5803,10 @@ SSL_PIPE *NewSslPipeEx3(bool server_mode, X *x, K *k, LIST *chain, DH_CTX *dh, b
 #endif
 
 		ssl = SSL_new(ssl_ctx);
-
+		if (ssl == NULL)
+		{
+			return NULL;
+		}
 		SSL_set_ex_data(ssl, GetSslClientCertIndex(), clientcert);
 	}
 	Unlock(openssl_lock);