diff --git a/python/Makefile b/python/Makefile
index 14bb81c04..4466610d8 100644
--- a/python/Makefile
+++ b/python/Makefile
@@ -162,6 +162,8 @@ ifeq ($(PLATFORM),emscripten)
 $(py_objs): SFLAGS := $(subst -Os,-O0,$(SFLAGS))
 endif
 
+# Icon dependency
+python/port/modturtle_impl.cpp: python/port/turtle_icon.cpp
 
 # QSTR generation