diff --git a/src/SFML/Network/Packet.cpp b/src/SFML/Network/Packet.cpp
index 738c7c832..089ee6061 100644
--- a/src/SFML/Network/Packet.cpp
+++ b/src/SFML/Network/Packet.cpp
@@ -405,7 +405,7 @@ Packet& Packet::operator <<(double data)
 Packet& Packet::operator <<(const char* data)
 {
     // First insert string length
-    Uint32 length = std::strlen(data);
+    Uint32 length = static_cast<Uint32>(std::strlen(data));
     *this << length;
 
     // Then insert characters
@@ -434,7 +434,7 @@ Packet& Packet::operator <<(const std::string& data)
 Packet& Packet::operator <<(const wchar_t* data)
 {
     // First insert string length
-    Uint32 length = std::wcslen(data);
+    Uint32 length = static_cast<Uint32>(std::wcslen(data));
     *this << length;
 
     // Then insert characters
diff --git a/src/SFML/Window/Win32/JoystickImpl.cpp b/src/SFML/Window/Win32/JoystickImpl.cpp
index e364fc5de..76fb27a6b 100644
--- a/src/SFML/Window/Win32/JoystickImpl.cpp
+++ b/src/SFML/Window/Win32/JoystickImpl.cpp
@@ -291,7 +291,7 @@ sf::String JoystickImpl::getDeviceName(unsigned int index, JOYCAPS caps)
 
 
 ////////////////////////////////////////////////////////////
-sf::String JoystickImpl::getErrorString(DWORD errorCode)
+sf::String JoystickImpl::getErrorString(DWORD /*errorCode*/)
 {
     std::basic_ostringstream<TCHAR, std::char_traits<TCHAR> > ss;
     TCHAR errBuff[256];