diff --git a/kitty/fonts.c b/kitty/fonts.c
index 59f0e9b9a..228d7e17b 100644
--- a/kitty/fonts.c
+++ b/kitty/fonts.c
@@ -460,7 +460,7 @@ calc_cell_metrics(FontGroup *fg) {
 }
 
 static bool
-face_has_codepoint(const PyObject* face, char_type cp) {
+face_has_codepoint(const void* face, char_type cp) {
     return glyph_id_for_codepoint(face, cp) > 0;
 }