diff --git a/camera/video4linux2.c b/camera/video4linux2.c
index 2d4e2c86d9..54c2b6f0ee 100644
--- a/camera/video4linux2.c
+++ b/camera/video4linux2.c
@@ -750,7 +750,7 @@ static void v4l_texture_subimage_2d(void *data)
    preprocess_image(data);
 }
 
-static int v4l_ready(void *data)
+static int v4l_ready(void *data, unsigned *width, unsigned *height)
 {
    video4linux_t *v4l = (video4linux_t*)data;
    return v4l->ready;
diff --git a/driver.h b/driver.h
index 688e5f422b..0d2cb11a54 100644
--- a/driver.h
+++ b/driver.h
@@ -339,7 +339,7 @@ typedef struct camera_driver
    void (*free)(void *data);
    int  (*start)(void *data);
    int  (*stop)(void *data);
-   int  (*ready)(void *data);
+   int  (*ready)(void *data, unsigned *width, unsigned *height);
    void (*texture_image_2d)(void *data);
    void (*texture_subimage_2d)(void *data);
    const char *ident;