diff --git a/ssl/t1_enc.c b/ssl/t1_enc.c
index 0f5baa6e4..e1a360797 100644
--- a/ssl/t1_enc.c
+++ b/ssl/t1_enc.c
@@ -650,6 +650,7 @@ int tls1_setup_key_block(SSL *s)
 
     if ((p2 = (unsigned char *)OPENSSL_malloc(num)) == NULL) {
         SSLerr(SSL_F_TLS1_SETUP_KEY_BLOCK, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(p1);
         goto err;
     }
 #ifdef TLS_DEBUG