diff --git a/README.md b/README.md
index 6bd77f0e..8797f054 100644
--- a/README.md
+++ b/README.md
@@ -76,7 +76,7 @@ git clone --recursive https://github.com/FWGS/hlsdk-portable
 
 # Build Instructions
 
-## Windows
+## Windows x86.
 
 ### Prerequisites
 
@@ -131,7 +131,7 @@ cmake -G "Visual Studio 16 2019" -A Win32 -B build
 
 After the configuration step, `HLSDK-PORTABLE.sln` should appear in the `build` directory. You can open this solution in Visual Studio and continue developing there.
 
-## Windows. Using Microsoft Visual Studio 6
+## Windows x86. Using Microsoft Visual Studio 6
 
 Microsoft Visual Studio 6 is very old, but if you still have it installed, you can use it to build this hlsdk. There are no project files, but two `.bat` files, for server and client libraries. They require variable **MSVCDir** to be set to the installation path of Visual Studio:
 
@@ -142,7 +142,7 @@ cd dlls && compile.bat && cd ../cl_dll && compile.bat
 
 `hl.dll` and `client.dll` will appear in `dlls/` and `cl_dll/` diretories. The libraries built with msvc6 should be compatible with Windows XP.
 
-## Linux. Using Steam Runtime in chroot
+## Linux x86. Portable steam-compatible build using Steam Runtime in chroot
 
 ### Prerequisites
 
@@ -168,7 +168,7 @@ schroot --chroot steamrt_scout_i386 -- cmake -B build-in-steamrt -S .
 schroot --chroot steamrt_scout_i386 -- cmake --build build-in-steamrt
 ```
 
-## Linux. Build without Steam Runtime
+## Linux x86. Portable steam-compatible build without Steam Runtime
 
 ### Prerequisites
 
@@ -190,7 +190,7 @@ cmake .. -DCMAKE_C_FLAGS="-static-libstdc++ -static-libgcc"
 ```
 To ensure portability it's still better to build using Steam Runtime or another chroot of some older distro.
 
-## Linux. Build in your own chroot
+## Linux x86. Portable steam-compatible build in your own chroot
 
 ### Prerequisites
 
@@ -272,11 +272,11 @@ make -j
 
 ## Other platforms
 
-Building on other Unix-like platforms (e.g. FreeBSD) is supported.
+Building on other architectures (e.g x86_64 or arm) and POSIX-compliant OSes (e.g. FreeBSD) is supported.
 
 ### Prerequisites
 
-Install C and C++ compilers (like gcc or clang), cmake and make (or gmake)
+Install C and C++ compilers (like gcc or clang), cmake and make.
 
 ### Building
 
diff --git a/cl_dll/input_goldsource.cpp b/cl_dll/input_goldsource.cpp
index 615cb3d6..89408423 100644
--- a/cl_dll/input_goldsource.cpp
+++ b/cl_dll/input_goldsource.cpp
@@ -386,7 +386,7 @@ void IN_SetMouseMode(bool enable)
 		if (mouseparmsvalid)
 			restore_spi = SystemParametersInfo (SPI_SETMOUSE, 0, newmouseparms, 0);
 
-		m_bRawInput = m_rawinput->value != 0;
+		m_bRawInput = m_rawinput && m_rawinput->value != 0;
 		if(m_bRawInput)
 		{
 #if USE_SDL2
@@ -788,7 +788,7 @@ void GoldSourceInput::IN_GetMouseDelta( int *pOutX, int *pOutY)
 
 			bool lockEntered = MouseThread_ActiveLock_Enter();
 
-			m_bRawInput = m_rawinput->value != 0;
+			m_bRawInput = m_rawinput && m_rawinput->value != 0;
 
 			if(m_bRawInput && !isMouseRelative)
 			{
@@ -1573,7 +1573,7 @@ void GoldSourceInput::IN_Init (void)
 
 #if _WIN32
 	m_rawinput = gEngfuncs.pfnGetCvarPointer("m_rawinput");
-	m_bRawInput			 = m_rawinput->value != 0;
+	m_bRawInput			 = m_rawinput && m_rawinput->value != 0;
 	m_bMouseThread		  = gEngfuncs.CheckParm ("-mousethread", NULL ) != NULL;
 	m_mousethread_sleep	 = gEngfuncs.pfnRegisterVariable ( "m_mousethread_sleep", "1", FCVAR_ARCHIVE ); // default to less than 1000 Hz