diff --git a/SWIG/Examples/test-suite/python/overload_extendc_runme.py b/SWIG/Examples/test-suite/python/overload_extendc_runme.py
index 228a5b02a..cea3ea618 100644
--- a/SWIG/Examples/test-suite/python/overload_extendc_runme.py
+++ b/SWIG/Examples/test-suite/python/overload_extendc_runme.py
@@ -12,5 +12,11 @@ if f.test("hello",20) != 1020:
 if f.test("hello",20,100) != 120:
     raise RuntimeError
 
-
+# C default args
+if f.test(f) != 30:
+    raise RuntimeError
+if f.test(f,100) != 120:
+    raise RuntimeError
+if f.test(f,100,200) != 300:
+    raise RuntimeError