diff --git a/enzevalos_iphone/CHelpers.swift b/enzevalos_iphone/CHelpers.swift
index d79686e1421dcaa6a722afdf935ed3e26f2935dd..7a492ac9b17f086d56161c8cb635c4350ad73997 100644
--- a/enzevalos_iphone/CHelpers.swift
+++ b/enzevalos_iphone/CHelpers.swift
@@ -14,7 +14,7 @@ import Foundation
  */
 func createCStrArr(sarr: [String]) -> UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?{
     let len = sarr.count
-    var carr = init_str_arr(Int32(len))
+    let carr = init_str_arr(Int32(len))
     for i in 0..<len
     {
         let str = sarr[i]
diff --git a/enzevalos_iphone/c/general-helpers.c b/enzevalos_iphone/c/general-helpers.c
index bc3c21dff6803b3f0f62d7654fa7e86b0b8d63ff..8165cf452a4bb9763fc3d588d9a18c775e40968f 100644
--- a/enzevalos_iphone/c/general-helpers.c
+++ b/enzevalos_iphone/c/general-helpers.c
@@ -68,7 +68,7 @@ char *bin_to_hex(unsigned char *bin, int len)
     char *res = malloc(2*len+1);
     for (int i =0;i<len;i++)
     {
-        sprintf(buf, "%02x", bin[i]);
+        sprintf((char*) buf, "%02x", bin[i]);
         res[i*2]=buf[0];
         res[i*2+1]=buf[1];
     }
diff --git a/enzevalos_iphoneTests/CryptoTests.swift b/enzevalos_iphoneTests/CryptoTests.swift
index 06cbf1c028d152034c6a43823869733a5ea7082e..3b2d859734c3195805192c54b9966dae2b03b9ad 100644
--- a/enzevalos_iphoneTests/CryptoTests.swift
+++ b/enzevalos_iphoneTests/CryptoTests.swift
@@ -630,7 +630,7 @@ class CryptoTests: XCTestCase {
             XCTFail("No signed data")
             return
         }
-        guard let publickey = pgp.loadKey(id: mail.firstKey!.keyID)?.publicKey, keys.count > 0 else {
+        guard let _ = pgp.loadKey(id: mail.firstKey!.keyID)?.publicKey, keys.count > 0 else {
             XCTFail("Can not load key")
             return
         }
diff --git a/enzevalos_iphoneTests/GeneratedMocks.swift b/enzevalos_iphoneTests/GeneratedMocks.swift
index f82a6cb77fc10a62ea9f44d33c7a1bb38807baf9..3bd98d151c146b68fd67fa6aef4f7e66adfcd6ce 100644
--- a/enzevalos_iphoneTests/GeneratedMocks.swift
+++ b/enzevalos_iphoneTests/GeneratedMocks.swift
@@ -1,4 +1,4 @@
-// MARK: - Mocks generated from file: enzevalos_iphone/AuthenticationModel.swift at 2020-03-31 16:56:08 +0000
+// MARK: - Mocks generated from file: enzevalos_iphone/AuthenticationModel.swift at 2020-04-03 07:21:06 +0000
 
 //
 //  AuthenticationModel.swift
@@ -653,7 +653,7 @@ import Foundation
 }
 
 
-// MARK: - Mocks generated from file: enzevalos_iphone/AuthenticationViewModel.swift at 2020-03-31 16:56:08 +0000
+// MARK: - Mocks generated from file: enzevalos_iphone/AuthenticationViewModel.swift at 2020-04-03 07:21:06 +0000
 
 //
 //  AuthenticationViewModel.swift