diff --git a/gfx/drivers/gl.c b/gfx/drivers/gl.c
index c2a57974f2..a0819cf463 100644
--- a/gfx/drivers/gl.c
+++ b/gfx/drivers/gl.c
@@ -935,8 +935,14 @@ static void gl2_renderchain_recompute_pass_sizes(
             break;
 
          case RARCH_SCALE_VIEWPORT:
-            fbo_rect->img_width      = fbo_rect->max_img_width =
+            if (gl->rotation % 180 == 90)
+            {
+               fbo_rect->img_width      = fbo_rect->max_img_width =
+               fbo_scale->scale_x * vp_height;
+            } else {
+               fbo_rect->img_width      = fbo_rect->max_img_width =
                fbo_scale->scale_x * vp_width;
+            }
             break;
       }
 
@@ -953,8 +959,14 @@ static void gl2_renderchain_recompute_pass_sizes(
             break;
 
          case RARCH_SCALE_VIEWPORT:
+            if (gl->rotation % 180 == 90)
+            {
+               fbo_rect->img_height      = fbo_rect->max_img_height =
+               fbo_scale->scale_y * vp_width;
+            } else {
             fbo_rect->img_height     = fbo_rect->max_img_height =
                fbo_scale->scale_y * vp_height;
+            }
             break;
       }