diff --git a/input/dinput.c b/input/dinput.c
index 222ba366e6..b86e90e32d 100644
--- a/input/dinput.c
+++ b/input/dinput.c
@@ -285,6 +285,8 @@ static int16_t dinput_mouse_state(struct dinput_input *di, unsigned id)
          return di->mouse_wu;
       case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
          return di->mouse_wd;
+      case RETRO_DEVICE_ID_MOUSE_MIDDLE:
+         return di->mouse_m;
       default:
          return 0;
    }
diff --git a/input/sdl_input.c b/input/sdl_input.c
index b829488946..ee0a90de9d 100644
--- a/input/sdl_input.c
+++ b/input/sdl_input.c
@@ -128,6 +128,8 @@ static int16_t sdl_mouse_device_state(sdl_input_t *sdl, unsigned id)
          return sdl->mouse_x;
       case RETRO_DEVICE_ID_MOUSE_Y:
          return sdl->mouse_y;
+      case RETRO_DEVICE_ID_MOUSE_MIDDLE:
+         return sdl->mouse_m;
       default:
          return 0;
    }
diff --git a/input/udev_input.c b/input/udev_input.c
index 5956427e6a..475018c73a 100644
--- a/input/udev_input.c
+++ b/input/udev_input.c
@@ -451,6 +451,8 @@ static int16_t udev_mouse_state(udev_input_t *udev, unsigned id)
          return udev->mouse_l;
       case RETRO_DEVICE_ID_MOUSE_RIGHT:
          return udev->mouse_r;
+      case RETRO_DEVICE_ID_MOUSE_MIDDLE:
+         return udev->mouse_m;
       default:
          return 0;
    }
diff --git a/input/x11_input.c b/input/x11_input.c
index 4a0cd58e43..4b497a8ff0 100644
--- a/input/x11_input.c
+++ b/input/x11_input.c
@@ -119,6 +119,8 @@ static int16_t x_mouse_state(x11_input_t *x11, unsigned id)
          return x11->mouse_wu;
       case RETRO_DEVICE_ID_MOUSE_WHEELDOWN:
          return x11->mouse_wd;
+      case RETRO_DEVICE_ID_MOUSE_MIDDLE:
+         return x11->mouse_m;
       default:
          return 0;
    }
diff --git a/libretro-test/libretro-test.c b/libretro-test/libretro-test.c
index f7c8cbc0e5..040374884a 100644
--- a/libretro-test/libretro-test.c
+++ b/libretro-test/libretro-test.c
@@ -208,6 +208,7 @@ static void update_input(void)
    bool mouse_r    = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_RIGHT);
    bool mouse_down = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELDOWN);
    bool mouse_up   = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_WHEELUP);
+   bool mouse_middle = input_state_cb(0, RETRO_DEVICE_MOUSE, 0, RETRO_DEVICE_ID_MOUSE_MIDDLE);
    if (mouse_x)
       logging.log(RETRO_LOG_INFO, "Mouse X: %d\n", mouse_x);
    if (mouse_y)
@@ -220,6 +221,8 @@ static void update_input(void)
       logging.log(RETRO_LOG_INFO, "Mouse wheeldown pressed.\n");
    if (mouse_up)
       logging.log(RETRO_LOG_INFO, "Mouse wheelup pressed.\n");
+   if (mouse_middle)
+      logging.log(RETRO_LOG_INFO, "Mouse middle pressed.\n");
 
    mouse_rel_x += mouse_x;
    mouse_rel_y += mouse_y;
diff --git a/libretro.h b/libretro.h
index c68a668eae..a0a748331c 100755
--- a/libretro.h
+++ b/libretro.h
@@ -144,6 +144,7 @@ extern "C" {
 #define RETRO_DEVICE_ID_MOUSE_RIGHT      3
 #define RETRO_DEVICE_ID_MOUSE_WHEELUP    4
 #define RETRO_DEVICE_ID_MOUSE_WHEELDOWN  5
+#define RETRO_DEVICE_ID_MOUSE_MIDDLE     6
 
 // Id values for LIGHTGUN types.
 #define RETRO_DEVICE_ID_LIGHTGUN_X        0