diff --git a/src/posix/cocoa/gl_sysfb.h b/src/posix/cocoa/gl_sysfb.h
index a45f448f8..2a2b8a5d2 100644
--- a/src/posix/cocoa/gl_sysfb.h
+++ b/src/posix/cocoa/gl_sysfb.h
@@ -91,8 +91,8 @@ private:
 
 	int GetTitleBarHeight() const;
 
-	static const int MINIMUM_WIDTH  = 320;
-	static const int MINIMUM_HEIGHT = 200;
+	static const int MINIMUM_WIDTH  = 640;
+	static const int MINIMUM_HEIGHT = 400;
 };
 
 #endif // COCOA_GL_SYSFB_H_INCLUDED
diff --git a/src/posix/sdl/gl_sysfb.h b/src/posix/sdl/gl_sysfb.h
index f7ac38dd3..6b1df1cc3 100644
--- a/src/posix/sdl/gl_sysfb.h
+++ b/src/posix/sdl/gl_sysfb.h
@@ -47,8 +47,8 @@ protected:
 
 	void UpdateColors ();
 
-	static const int MIN_WIDTH = 320;
-	static const int MIN_HEIGHT = 200;
+	static const int MIN_WIDTH = 640;
+	static const int MIN_HEIGHT = 400;
 };
 
 #endif // __POSIX_SDL_GL_SYSFB_H__
diff --git a/src/r_videoscale.cpp b/src/r_videoscale.cpp
index d6254c992..2a59c4a3b 100644
--- a/src/r_videoscale.cpp
+++ b/src/r_videoscale.cpp
@@ -32,16 +32,16 @@
 extern bool setsizeneeded;
 
 EXTERN_CVAR(Int, vid_aspect)
-CUSTOM_CVAR(Int, vid_scale_customwidth, 320, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
+CUSTOM_CVAR(Int, vid_scale_customwidth, 640, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 {
-	if (self < 320)
-		self = 320;
+	if (self < 640)
+		self = 640;
 	setsizeneeded = true;
 }
-CUSTOM_CVAR(Int, vid_scale_customheight, 200, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
+CUSTOM_CVAR(Int, vid_scale_customheight, 400, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 {
-	if (self < 200)
-		self = 200;
+	if (self < 400)
+		self = 400;
 	setsizeneeded = true;
 }
 CVAR(Bool, vid_scale_customlinear, false, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
@@ -66,7 +66,7 @@ namespace
 		//	isValid,	isLinear,	GetScaledWidth(),									            	GetScaledHeight(),										        	isScaled43, isCustom
 		{ true,			false,		[](uint32_t Width)->uint32_t { return Width; },		        	[](uint32_t Height)->uint32_t { return Height; },	        		false,  	false   },	// 0  - Native
 		{ true,			true,		[](uint32_t Width)->uint32_t { return Width; },			        [](uint32_t Height)->uint32_t { return Height; },	        		false,  	false   },	// 1  - Native (Linear)
-		{ true,			false,		[](uint32_t Width)->uint32_t { return 320; },		            	[](uint32_t Height)->uint32_t { return 200; },			        	true,   	false   },	// 2  - 320x200
+		{ true,			false,		[](uint32_t Width)->uint32_t { return 640; },		            	[](uint32_t Height)->uint32_t { return 400; },			        	true,   	false   },	// 2  - formerly 320x200
 		{ true,			false,		[](uint32_t Width)->uint32_t { return 640; },		            	[](uint32_t Height)->uint32_t { return 400; },				        true,   	false   },	// 3  - 640x400
 		{ true,			true,		[](uint32_t Width)->uint32_t { return 1280; },		            	[](uint32_t Height)->uint32_t { return 800; },	        			true,   	false   },	// 4  - 1280x800		
 		{ true,			true,		[](uint32_t Width)->uint32_t { return vid_scale_customwidth; },	[](uint32_t Height)->uint32_t { return vid_scale_customheight; },	true,   	true    },	// 5  - Custom
@@ -90,7 +90,8 @@ CUSTOM_CVAR(Float, vid_scalefactor, 1.0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG | CVAR
 CUSTOM_CVAR(Int, vid_scalemode, 0, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 {
 	setsizeneeded = true;
-	if (isOutOfBounds(self))
+	if (self == 2) self = 3;	// block 320x200 setting.
+	else if (isOutOfBounds(self))
 		self = 0;
 }
 
diff --git a/src/v_framebuffer.cpp b/src/v_framebuffer.cpp
index ec53fc7e8..3a569cb1d 100644
--- a/src/v_framebuffer.cpp
+++ b/src/v_framebuffer.cpp
@@ -210,8 +210,8 @@ void DFrameBuffer::Update()
 	int initialHeight = GetClientHeight();
 	int clientWidth = ViewportScaledWidth(initialWidth, initialHeight);
 	int clientHeight = ViewportScaledHeight(initialWidth, initialHeight);
-	if (clientWidth < 320) clientWidth = 320;
-	if (clientHeight < 200) clientHeight = 200;
+	if (clientWidth < 640) clientWidth = 640;
+	if (clientHeight < 400) clientHeight = 400;
 	if (clientWidth > 0 && clientHeight > 0 && (GetWidth() != clientWidth || GetHeight() != clientHeight))
 	{
 		SetVirtualSize(clientWidth, clientHeight);
diff --git a/src/win32/i_input.cpp b/src/win32/i_input.cpp
index 676484a30..b8f5ba777 100644
--- a/src/win32/i_input.cpp
+++ b/src/win32/i_input.cpp
@@ -525,8 +525,8 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 			}
 			else
 			{
-				mmi->ptMinTrackSize.x = 320;
-				mmi->ptMinTrackSize.y = 200;
+				mmi->ptMinTrackSize.x = 640;
+				mmi->ptMinTrackSize.y = 400;
 			}
 			return 0;
 		}
diff --git a/wadsrc/static/menudef.txt b/wadsrc/static/menudef.txt
index 194096f0e..ed702e345 100644
--- a/wadsrc/static/menudef.txt
+++ b/wadsrc/static/menudef.txt
@@ -2132,7 +2132,6 @@ OptionValue ScaleModes
 {
 	0, "$OPTVAL_SCALENEAREST"
 	1, "$OPTVAL_SCALELINEAR"
-	2, "320x200"
 	3, "640x400"
 	4, "1280x800"
 	5, "$OPTVAL_CUSTOM"