diff --git a/src/rcore_desktop_sdl.c b/src/rcore_desktop_sdl.c
index cc30791cc..fb6e48edb 100644
--- a/src/rcore_desktop_sdl.c
+++ b/src/rcore_desktop_sdl.c
@@ -1042,7 +1042,7 @@ static int InitPlatform(void)
         CORE.Window.ready = true;
 
         SDL_DisplayMode displayMode;
-        SDL_GetCurrentDisplayMode(0, &displayMode);
+        SDL_GetCurrentDisplayMode(SDL_GetWindowDisplayIndex(platform.window), &displayMode);
 
         CORE.Window.display.width = displayMode.w;
         CORE.Window.display.height = displayMode.h;