diff --git a/source/build/include/baselayer.h b/source/build/include/baselayer.h
index f4f8fe953..1e3bfd363 100644
--- a/source/build/include/baselayer.h
+++ b/source/build/include/baselayer.h
@@ -25,7 +25,6 @@ extern int32_t newaspect_enable;
 extern int32_t r_fpgrouscan;
 extern int32_t setaspect_new_use_dimen;
 extern int32_t xres, yres, bpp;
-extern double refreshfreq;
 
 int32_t videoCheckMode(int32_t *x, int32_t *y, int32_t c, int32_t fs, int32_t forced);
 int32_t videoSetMode(int32_t x, int32_t y, int32_t c, int32_t fs);
diff --git a/source/common/engine/i_interface.cpp b/source/common/engine/i_interface.cpp
index 803317a81..fbeb4dfaa 100644
--- a/source/common/engine/i_interface.cpp
+++ b/source/common/engine/i_interface.cpp
@@ -2,7 +2,6 @@
 
 // Some global engine variables taken out of the backend code.
 SystemCallbacks *sysCallbacks;
-double refreshfreq;
 FString endoomName;
 bool batchrun;
 
diff --git a/source/common/platform/posix/sdl/sdlglvideo.cpp b/source/common/platform/posix/sdl/sdlglvideo.cpp
index 857abe981..e9ef2267c 100644
--- a/source/common/platform/posix/sdl/sdlglvideo.cpp
+++ b/source/common/platform/posix/sdl/sdlglvideo.cpp
@@ -75,7 +75,6 @@
 // PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
 
 // EXTERNAL DATA DECLARATIONS ----------------------------------------------
-extern double refreshfreq;
 extern IVideo *Video;
 
 EXTERN_CVAR (Int, vid_adapter)
@@ -451,19 +450,6 @@ SDLVideo::SDLVideo ()
 		Priv::CreateWindow(SDL_WINDOW_HIDDEN);
 	}
 #endif
-
-	// Get refresh rate for current display.
-	SDL_DisplayMode display;
-
-	if(SDL_GetCurrentDisplayMode(vid_adapter, &display) == 0)
-	{
-		refreshfreq = display.refresh_rate;
-	}
-	else
-	{
-		fprintf(stderr, "Failed to get refresh rate: %s\n", SDL_GetError());
-		return;
-	}
 }
 
 SDLVideo::~SDLVideo ()
diff --git a/source/common/platform/win32/base_sysfb.cpp b/source/common/platform/win32/base_sysfb.cpp
index d470bd5fa..9455dbae6 100644
--- a/source/common/platform/win32/base_sysfb.cpp
+++ b/source/common/platform/win32/base_sysfb.cpp
@@ -58,7 +58,6 @@ extern "C" {
     __declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
     __declspec(dllexport) int AmdPowerXpressRequestHighPerformance = 1;	
 }
-void GetRefreshRate(HWND hWnd);
 
 EXTERN_CVAR(Int, vid_defwidth)
 EXTERN_CVAR(Int, vid_defheight)
@@ -339,7 +338,6 @@ void SystemBaseFrameBuffer::PositionWindow(bool fullscreen, bool initialcall)
 	}
 	m_Fullscreen = fullscreen;
 	SetSize(GetClientWidth(), GetClientHeight());
-	GetRefreshRate(Window);
 }
 
 //==========================================================================
diff --git a/source/common/platform/win32/i_input.cpp b/source/common/platform/win32/i_input.cpp
index 8e9af9fa6..c9cc13609 100644
--- a/source/common/platform/win32/i_input.cpp
+++ b/source/common/platform/win32/i_input.cpp
@@ -135,8 +135,7 @@ LPDIRECTINPUT			g_pdi3;
 extern bool AppActive;
 
 int SessionState = 0;
-int BlockMouseMove; 
-extern double refreshfreq;
+int BlockMouseMove;
 
 static bool EventHandlerResultForNativeMouse;
 
@@ -345,22 +344,6 @@ bool CallHook(FInputDevice *device, HWND hWnd, UINT message, WPARAM wParam, LPAR
 	return device->WndProcHook(hWnd, message, wParam, lParam, result);
 }
 
-void GetRefreshRate(HWND hWnd)
-{
-	HMONITOR moni = MonitorFromWindow(hWnd, MONITOR_DEFAULTTONEAREST);
-	MONITORINFOEXA moninf;
-	moninf.cbSize = sizeof(moninf);
-	if (GetMonitorInfoA(moni, (LPMONITORINFO)&moninf))
-	{
-		DEVMODEA dm;
-		dm.dmSize = sizeof(DEVMODEA);
-		if (EnumDisplaySettingsA(moninf.szDevice, ENUM_CURRENT_SETTINGS, &dm))
-		{
-			refreshfreq = dm.dmDisplayFrequency;
-		}
-	}
-}
-
 LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 {
 	LRESULT result;
@@ -446,7 +429,6 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 		break;
 
 	case WM_SETFOCUS:
-		GetRefreshRate(hWnd);
 		I_CheckNativeMouse (false, EventHandlerResultForNativeMouse);	// This cannot call the event handler. Doing it from here is unsafe.
 		break;
 
@@ -491,8 +473,6 @@ LRESULT CALLBACK WndProc (HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
 		break;
 
 	case WM_DISPLAYCHANGE:
-		GetRefreshRate(hWnd);
-		// fall through
 	case WM_STYLECHANGED:
 		return DefWindowProc(hWnd, message, wParam, lParam);