diff --git a/gfx/gl.c b/gfx/gl.c
index 87eca440f4..da756a34f3 100644
--- a/gfx/gl.c
+++ b/gfx/gl.c
@@ -398,8 +398,11 @@ static void gl_compute_fbo_geometry(gl_t *gl, unsigned width, unsigned height,
    unsigned last_height = height;
    unsigned last_max_width = gl->tex_w;
    unsigned last_max_height = gl->tex_h;
-   GLint max_size;
+
+   GLint max_size = 0;
    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &max_size);
+   bool size_modified = false;
+
    // Calculate viewports for FBOs.
    for (int i = 0; i < gl->fbo_pass; i++)
    {
@@ -443,24 +446,31 @@ static void gl_compute_fbo_geometry(gl_t *gl, unsigned width, unsigned height,
 
       if (gl->fbo_rect[i].img_width > max_size)
       {
+         size_modified = true;
          gl->fbo_rect[i].img_width = max_size;
       }
 
       if (gl->fbo_rect[i].img_height > max_size)
       {
+         size_modified = true;
          gl->fbo_rect[i].img_height = max_size;
       }
 
       if (gl->fbo_rect[i].max_img_width > max_size)
       {
+         size_modified = true;
          gl->fbo_rect[i].max_img_width = max_size;
       }
 
       if (gl->fbo_rect[i].max_img_height > max_size)
       {
+         size_modified = true;
          gl->fbo_rect[i].max_img_height = max_size;
       }
 
+      if (size_modified)
+         RARCH_WARN("FBO textures exceeded maximum size of GPU (%ux%u). Resizing to fit.\n", max_size, max_size);
+
       last_width = gl->fbo_rect[i].img_width;
       last_height = gl->fbo_rect[i].img_height;
       last_max_width = gl->fbo_rect[i].max_img_width;