diff --git a/kitty/fonts.c b/kitty/fonts.c
index 04a34595f..64556d252 100644
--- a/kitty/fonts.c
+++ b/kitty/fonts.c
@@ -207,7 +207,7 @@ python_send_to_gpu(unsigned int x, unsigned int y, unsigned int z, uint8_t* buf)
 
 static inline PyObject*
 update_cell_metrics(float pt_sz, float xdpi, float ydpi) {
-#define CALL(f) { if ((f)->face) { if(!set_size_for_face((f)->face, pt_sz, xdpi, ydpi)) return NULL; clear_sprite_map(f); (f)->hb_font = harfbuzz_font_for_face((f)->face); } }
+#define CALL(f) { if ((f)->face) { if(!set_size_for_face((f)->face, pt_sz, xdpi, ydpi)) return NULL; (f)->hb_font = harfbuzz_font_for_face((f)->face); } clear_sprite_map((f)); }
     CALL(&medium_font); CALL(&bold_font); CALL(&italic_font); CALL(&bi_font); CALL(&box_font);
     for (size_t i = 0; fallback_fonts[i].face != NULL; i++)  {
         CALL(fallback_fonts + i);
diff --git a/kitty/fonts/render.py b/kitty/fonts/render.py
index d486cce01..6f06e2429 100644
--- a/kitty/fonts/render.py
+++ b/kitty/fonts/render.py
@@ -91,6 +91,7 @@ def resize_fonts(new_sz, xdpi=None, ydpi=None):
         s.family, new_sz, xdpi, ydpi, cell_width, cell_height, baseline,
         underline_position, underline_thickness
     )
+    return cell_width, cell_height
 
 
 def add_line(buf, cell_width, position, thickness, cell_height):
diff --git a/kitty/screen.c b/kitty/screen.c
index d35da26f1..e6b6b552a 100644
--- a/kitty/screen.c
+++ b/kitty/screen.c
@@ -1599,7 +1599,7 @@ static PyMethodDef methods[] = {
     MND(cursor_forward, METH_VARARGS)
     {"wcswidth", (PyCFunction)screen_wcswidth, METH_O, ""},
     {"index", (PyCFunction)xxx_index, METH_VARARGS, ""},
-    MND(refresh_sprite_positions, METH_O)
+    MND(refresh_sprite_positions, METH_NOARGS)
     MND(tab, METH_NOARGS)
     MND(backspace, METH_NOARGS)
     MND(linefeed, METH_NOARGS)