diff --git a/configure/Makefile b/configure/Makefile
index db1b37a..ed7d3f2 100644
--- a/configure/Makefile
+++ b/configure/Makefile
@@ -14,8 +14,11 @@ os/CONFIG_PY.Common.%: $(TOP)/makehelper.py
 	[ -d $(dir $@) ] || $(MKDIR) $(dir $@)
 	$(PYTHON) $< $@
 
+ifeq ($(BASE_3_15), YES)
+realclean: py_clean
+else
 realclean:: py_clean
-clean:: py_clean
+endif
 
 py_clean:
 	$(RMDIR) os