diff --git a/src/engine/audio/Audio_Null.cpp b/src/engine/audio/Audio_Null.cpp
index f5575862..c2f8f102 100644
--- a/src/engine/audio/Audio_Null.cpp
+++ b/src/engine/audio/Audio_Null.cpp
@@ -47,7 +47,7 @@ void NullTimer::run()
     // Sleep for mInterval - mTail milliseconds
     std::this_thread::sleep_for(std::chrono::microseconds(mInterval * 1000 - mTail));
 
-    mTail += std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::system_clock::now() - timestamp).count();
+    mTail += (int)std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::system_clock::now() - timestamp).count();
   }
 }
 
diff --git a/src/engine/helper/HL_String.cpp b/src/engine/helper/HL_String.cpp
index b321fe8e..bdbaf246 100644
--- a/src/engine/helper/HL_String.cpp
+++ b/src/engine/helper/HL_String.cpp
@@ -71,7 +71,7 @@ uint64_t StringHelper::toUint64(const char* s, uint64_t def, bool *isOk)
 {
   uint64_t result = def;
 #if defined(TARGET_WIN)
-  if (sscanf(s, "%d", &result) != 1)
+  if (sscanf(s, "%I64d", &result) != 1)
 #else
   if (sscanf(s, "%llu", &result) != 1)
 #endif
@@ -290,7 +290,7 @@ static int hex2code(char s)
 
 static int hex2code(const char* s)
 {
-  return hex2code(s[0]) << 4 + hex2code(s[1]);
+  return (hex2code(s[0]) << 4) + hex2code(s[1]);
 }
 
 std::string StringHelper::fromHex2String(const std::string& s)
diff --git a/src/engine/helper/HL_VariantMap.cpp b/src/engine/helper/HL_VariantMap.cpp
index 86b41ac7..49dee41d 100644
--- a/src/engine/helper/HL_VariantMap.cpp
+++ b/src/engine/helper/HL_VariantMap.cpp
@@ -208,6 +208,8 @@ bool Variant::operator == (const Variant& rhs) const
   default:
     return false;
   }
+
+  return false;
 }
 
 bool Variant::operator != (const Variant& rhs) const
diff --git a/src/engine/media/MT_SevanaMos.cpp b/src/engine/media/MT_SevanaMos.cpp
index 3f2baa7a..6994c08f 100644
--- a/src/engine/media/MT_SevanaMos.cpp
+++ b/src/engine/media/MT_SevanaMos.cpp
@@ -528,9 +528,9 @@ std::string SevanaPVQA::mosToColor(float mos)
 
   float mosFraction = (mos - 1.0f) / 4.0f;
 
-  end.mBlue += (start.mBlue - end.mBlue) * mosFraction;
-  end.mGreen += (start.mGreen - end.mGreen) * mosFraction;
-  end.mRed += (start.mRed - end.mRed) * mosFraction;
+  end.mBlue += (uint8_t)((start.mBlue - end.mBlue) * mosFraction);
+  end.mGreen += (uint8_t)((start.mGreen - end.mGreen) * mosFraction);
+  end.mRed += (uint8_t)((start.mRed - end.mRed) * mosFraction);
 
   return end.toHex();
 }
@@ -866,7 +866,7 @@ SevanaAqua::PFaultsReport SevanaAqua::loadFaultsReport(std::istream& input)
         if (parts.size() >= 3)
         {
           if (parts.back() == "ms.")
-            result->mSignalAdvancedInMilliseconds = std::atof(parts[parts.size() - 2].c_str());
+            result->mSignalAdvancedInMilliseconds = (float)std::atof(parts[parts.size() - 2].c_str());
         }
       }
       else
@@ -879,7 +879,7 @@ SevanaAqua::PFaultsReport SevanaAqua::loadFaultsReport(std::istream& input)
           if (parts.size() >= 3)
           {
             if (parts.back() == "percent.")
-              result->mMistimingInPercents = std::atof(parts[parts.size() - 2].c_str());
+              result->mMistimingInPercents = (float)std::atof(parts[parts.size() - 2].c_str());
           }
         }
       }
diff --git a/src/libs/ice/CMakeLists.txt b/src/libs/ice/CMakeLists.txt
index 27f211c9..b798f6b2 100644
--- a/src/libs/ice/CMakeLists.txt
+++ b/src/libs/ice/CMakeLists.txt
@@ -32,6 +32,6 @@ set (ICE_STACK_SOURCES ICEAddress.cpp
     ICETime.cpp
     ICETransactionList.cpp)
 
-add_definitions(-DUSE_NATIVE_SMARTPTR)
+add_definitions(-DUSE_NATIVE_SMARTPTR -D_WINSOCK_DEPRECATED_NO_WARNINGS)
 
 add_library(ice_stack ${ICE_STACK_SOURCES})
diff --git a/src/libs/ice/ICEStunMessage.cpp b/src/libs/ice/ICEStunMessage.cpp
index dc84e921..92e94185 100644
--- a/src/libs/ice/ICEStunMessage.cpp
+++ b/src/libs/ice/ICEStunMessage.cpp
@@ -167,7 +167,7 @@ static void EmbedAttrBuffer(StunAttribute& attr, BufferWriter& writer)
   writer.writeUShort(attr.type());
   
   // Enqueue length
-  writer.writeUShort(attrBuffer.size());
+  writer.writeUShort((uint16_t)attrBuffer.size());
   
   // Save data offset in generated buffer
   attr.setDataOffset(writer.offset() + 2); // 2 is for first 16 bits written by bitstream
@@ -281,7 +281,7 @@ void StunMessage::buildPacket(ByteBuffer& buffer, const std::string& password)
   buffer.resize(stream.offset() + 2);
 
   // Put length in header
-  *((unsigned short*)buffer.mutableData() + 1) = htons(buffer.size() - STUN_HEADER_SIZE);
+  *((unsigned short*)buffer.mutableData() + 1) = (uint16_t)(htons(buffer.size() - STUN_HEADER_SIZE));
 
   // Check for fingerprint attribute
   fpIter = mAttrMap.find(StunAttribute::Fingerprint);
@@ -507,7 +507,7 @@ bool StunMessage::validatePacket(std::string key)
     unsigned short len = *lengthPtr;
     
     // Set fake length including MessageIntegrity attribute but excluding any attributes behind of it and excluding STUN header size
-    *lengthPtr = htons(mi.dataOffset() + HMAC_DIGEST_SIZE - STUN_HEADER_SIZE);
+    *lengthPtr = (uint16_t)(htons(mi.dataOffset() + HMAC_DIGEST_SIZE - STUN_HEADER_SIZE));
     
     // Find HMAC-SHA1 again
     hmacSha1Digest(mPacket2Parse.data(), mi.dataOffset() - 4, digest, key.c_str(), key.size());