diff --git a/src/core/encoding/ByteUtils.cpp b/src/core/encoding/ByteUtils.cpp
index 2c03981..61f943f 100644
--- a/src/core/encoding/ByteUtils.cpp
+++ b/src/core/encoding/ByteUtils.cpp
@@ -58,7 +58,7 @@ unsigned char ByteUtils::getLowerNBits(uint32_t input, unsigned num)
     case 7:
         return input & 0x7F;
     case 8:
-        return input;
+        return static_cast<unsigned char>(input);
     default:
         return 0;
     }
diff --git a/src/core/memory/SharedMemory.cpp b/src/core/memory/SharedMemory.cpp
index d15b525..2ccd7f3 100644
--- a/src/core/memory/SharedMemory.cpp
+++ b/src/core/memory/SharedMemory.cpp
@@ -10,7 +10,7 @@
 #include <fcntl.h>
 #endif
 
-void SharedMemory::allocate(const std::string& namePrefix, std::size_t size)
+void SharedMemory::allocate(const std::string& namePrefix, std::size_t)
 {
     createFile(namePrefix);
 
@@ -60,7 +60,9 @@ void SharedMemory::createFile(const std::string& namePrefix)
             break;
         }
     } while (retries > 0 && errno == EEXIST);
-#endif
+#else
+    (void)(namePrefix);
+#endif 
 }
 
 std::string SharedMemory::getRandomName(const std::string& namePrefix) const
diff --git a/src/core/streams/BitStream.cpp b/src/core/streams/BitStream.cpp
index 010a0c5..28afdb6 100644
--- a/src/core/streams/BitStream.cpp
+++ b/src/core/streams/BitStream.cpp
@@ -30,8 +30,8 @@ void BitStream::write(uint32_t data)
 
 void BitStream::writeWord(uint16_t data)
 {
-    const auto byte0 = data >> 8;
-    const auto byte1 = (data << 8) >> 8;
+    const auto byte0 = static_cast<unsigned char>(data >> 8);
+    const auto byte1 = static_cast<unsigned char>((data << 8) >> 8);
     writeByte(byte0);
     writeByte(byte1);
 }
@@ -81,13 +81,13 @@ void BitStream::writeNBits(uint32_t data, unsigned length)
         unsigned num_bytes = overshoot / 8;
         for (unsigned idx=0; idx< num_bytes; idx++)
         {
-            mCurrentByte = ByteUtils::getMBitsAtN(data, overshoot, idx*8 + num_left);
+            mCurrentByte = ByteUtils::getMBitsAtN(static_cast<unsigned char>(data), overshoot, idx*8 + num_left);
             writeByte(mCurrentByte, false);
         }
 
         if (const auto remainder = overshoot % 8; remainder > 0)
         {
-            mCurrentByte = ByteUtils::getMBitsAtN(data, remainder, num_bytes*8 + num_left);
+            mCurrentByte = ByteUtils::getMBitsAtN(static_cast<unsigned char>(data), remainder, num_bytes*8 + num_left);
             mBitOffset = remainder;
         }
         else
diff --git a/src/core/streams/InputBitStream.cpp b/src/core/streams/InputBitStream.cpp
index 75bd78f..8568853 100644
--- a/src/core/streams/InputBitStream.cpp
+++ b/src/core/streams/InputBitStream.cpp
@@ -12,7 +12,7 @@ bool InputBitStream::isFinished() const
     return mStream->good();
 }
 
-std::vector<unsigned char> InputBitStream::peekNextNBytes(unsigned n) const
+std::vector<unsigned char> InputBitStream::peekNextNBytes(unsigned) const
 {
     return {};
 }
@@ -29,7 +29,7 @@ std::optional<unsigned char> InputBitStream::readNextByte()
     }
 }
 
-void InputBitStream::writeByte(unsigned char data, bool checkOverflow )
+void InputBitStream::writeByte(unsigned char, bool)
 {
 
 }
diff --git a/src/core/streams/OutputBitStream.cpp b/src/core/streams/OutputBitStream.cpp
index 9418ede..2579e24 100644
--- a/src/core/streams/OutputBitStream.cpp
+++ b/src/core/streams/OutputBitStream.cpp
@@ -12,7 +12,7 @@ bool OutputBitStream::isFinished() const
     return true;
 }
 
-std::vector<unsigned char> OutputBitStream::peekNextNBytes(unsigned n) const
+std::vector<unsigned char> OutputBitStream::peekNextNBytes(unsigned) const
 {
     return {};
 }
@@ -22,7 +22,7 @@ std::optional<unsigned char> OutputBitStream::readNextByte()
     return std::nullopt;
 }
 
-void OutputBitStream::writeByte(unsigned char data, bool checkOverflow )
+void OutputBitStream::writeByte(unsigned char data, bool)
 {
     (*mStream) << data;
 }