diff --git a/kitty/screen.c b/kitty/screen.c
index c36f2ad34..1c4bea8b7 100644
--- a/kitty/screen.c
+++ b/kitty/screen.c
@@ -861,7 +861,7 @@ void set_icon(Screen *self, const char *buf, unsigned int sz) {
 }
 
 void set_dynamic_color(Screen *self, unsigned int code, const char *buf, unsigned int sz) {
-    if (sz) PyObject_CallMethod(self->callbacks, "set_dynamic_color", "Iy#", code, buf, sz);
+    PyObject_CallMethod(self->callbacks, "set_dynamic_color", "Iy#", code, buf, sz);
     if (PyErr_Occurred()) PyErr_Print();
     PyErr_Clear(); 
 }