diff --git a/src/win32/hardware.cpp b/src/win32/hardware.cpp
index 7c3127164..7121738f4 100644
--- a/src/win32/hardware.cpp
+++ b/src/win32/hardware.cpp
@@ -417,10 +417,13 @@ CUSTOM_CVAR(Bool, swtruecolor, true, CVAR_ARCHIVE|CVAR_GLOBALCONFIG|CVAR_NOINITC
 {
 	// Strictly speaking this doesn't require a mode switch, but it is the easiest
 	// way to force a CreateFramebuffer call without a lot of refactoring.
-	NewWidth = screen->GetWidth();
-	NewHeight = screen->GetHeight();
-	NewBits = DisplayBits;
-	setmodeneeded = true;
+	if (currentrenderer == 0)
+	{
+		NewWidth = screen->GetWidth();
+		NewHeight = screen->GetHeight();
+		NewBits = DisplayBits;
+		setmodeneeded = true;
+	}
 }
 
 CUSTOM_CVAR (Bool, fullscreen, false, CVAR_ARCHIVE|CVAR_GLOBALCONFIG|CVAR_NOINITCALL)