diff --git a/input/input_driver.c b/input/input_driver.c
index 0b31266798..e8fd31022e 100644
--- a/input/input_driver.c
+++ b/input/input_driver.c
@@ -386,13 +386,20 @@ bool input_translate_coord_viewport(int mouse_x, int mouse_y,
       int16_t *res_screen_y)
 {
    int scaled_screen_x, scaled_screen_y, scaled_x, scaled_y;
+   int norm_full_vp_width, norm_full_vp_height;
    struct video_viewport vp = {0};
 
    if (!video_driver_get_viewport_info(&vp))
       return false;
 
-   scaled_screen_x = (2 * mouse_x * 0x7fff) / (int)vp.full_width - 0x7fff;
-   scaled_screen_y = (2 * mouse_y * 0x7fff) / (int)vp.full_height - 0x7fff;
+   norm_full_vp_width  = (int)vp.full_width;
+   norm_full_vp_height = (int)vp.full_height;
+
+   if (norm_full_vp_width <= 0 || norm_full_vp_height <= 0)
+      return false;
+
+   scaled_screen_x = (2 * mouse_x * 0x7fff) / norm_full_vp_width  - 0x7fff;
+   scaled_screen_y = (2 * mouse_y * 0x7fff) / norm_full_vp_height - 0x7fff;
    if (scaled_screen_x < -0x7fff || scaled_screen_x > 0x7fff)
       scaled_screen_x = -0x8000; /* OOB */
    if (scaled_screen_y < -0x7fff || scaled_screen_y > 0x7fff)
@@ -401,8 +408,8 @@ bool input_translate_coord_viewport(int mouse_x, int mouse_y,
    mouse_x -= vp.x;
    mouse_y -= vp.y;
 
-   scaled_x = (2 * mouse_x * 0x7fff) / (int)vp.width - 0x7fff;
-   scaled_y = (2 * mouse_y * 0x7fff) / (int)vp.height - 0x7fff;
+   scaled_x = (2 * mouse_x * 0x7fff) / norm_full_vp_width  - 0x7fff;
+   scaled_y = (2 * mouse_y * 0x7fff) / norm_full_vp_height - 0x7fff;
    if (scaled_x < -0x7fff || scaled_x > 0x7fff)
       scaled_x = -0x8000; /* OOB */
    if (scaled_y < -0x7fff || scaled_y > 0x7fff)