diff --git a/src/video/x11/SDL_x11modes.c b/src/video/x11/SDL_x11modes.c
index f77c58b6af..59920974d2 100644
--- a/src/video/x11/SDL_x11modes.c
+++ b/src/video/x11/SDL_x11modes.c
@@ -397,19 +397,26 @@ static SDL_bool SetXRandRModeInfo(Display *display, XRRScreenResources *res, RRC
         if (info->id == modeID) {
             XRRCrtcInfo *crtcinfo;
             Rotation rotation = 0;
+            XFixed scale_w = 0x10000, scale_h = 0x10000;
+            XRRCrtcTransformAttributes *attr;
 
             crtcinfo = X11_XRRGetCrtcInfo(display, res, crtc);
             if (crtcinfo) {
                 rotation = crtcinfo->rotation;
                 X11_XRRFreeCrtcInfo(crtcinfo);
             }
+            if (X11_XRRGetCrtcTransform(display, crtc, &attr) && attr) {
+                scale_w = attr->currentTransform.matrix[0][0];
+                scale_h = attr->currentTransform.matrix[1][1];
+                X11_XFree(attr);
+            }
 
             if (rotation & (XRANDR_ROTATION_LEFT | XRANDR_ROTATION_RIGHT)) {
-                mode->w = info->height;
-                mode->h = info->width;
+                mode->w = (info->height * scale_w + 0xffff) >> 16;
+                mode->h = (info->width * scale_h + 0xffff) >> 16;
             } else {
-                mode->w = info->width;
-                mode->h = info->height;
+                mode->w = (info->width * scale_w + 0xffff) >> 16;
+                mode->h = (info->height * scale_h + 0xffff) >> 16;
             }
             mode->refresh_rate = CalculateXRandRRefreshRate(info);
             ((SDL_DisplayModeData *)mode->driverdata)->xrandr_mode = modeID;
diff --git a/src/video/x11/SDL_x11sym.h b/src/video/x11/SDL_x11sym.h
index 9f8f6b69b4..0a5fe38d56 100644
--- a/src/video/x11/SDL_x11sym.h
+++ b/src/video/x11/SDL_x11sym.h
@@ -309,6 +309,7 @@ SDL_X11_SYM(XRRPropertyInfo*,XRRQueryOutputProperty,(Display *dpy,RROutput outpu
 SDL_X11_SYM(int,XRRGetOutputProperty,(Display *dpy,RROutput output, Atom property, long offset, long length, Bool _delete, Bool pending, Atom req_type, Atom *actual_type, int *actual_format, unsigned long *nitems, unsigned long *bytes_after, unsigned char **prop),(dpy,output,property,offset,length, _delete, pending, req_type, actual_type, actual_format, nitems, bytes_after, prop),return)
 SDL_X11_SYM(RROutput,XRRGetOutputPrimary,(Display *dpy,Window window),(dpy,window),return)
 SDL_X11_SYM(void,XRRSelectInput,(Display *dpy, Window window, int mask),(dpy,window,mask),)
+SDL_X11_SYM(Status,XRRGetCrtcTransform,(Display *dpy,RRCrtc crtc,XRRCrtcTransformAttributes **attributes),(dpy,crtc,attributes),return)
 #endif
 
 /* MIT-SCREEN-SAVER support */