diff --git a/Examples/test-suite/default_arg_values.i b/Examples/test-suite/default_arg_values.i
index e52375073..47ca2d12f 100644
--- a/Examples/test-suite/default_arg_values.i
+++ b/Examples/test-suite/default_arg_values.i
@@ -1,10 +1,18 @@
 %module default_arg_values
 
-%inline %{
+%{
+struct Display {
+  // Some compilers warn about 'float v = NULL', so only SWIG sees this peculiarity
+  // Bad Python wrappers were being generated when NULL used for primitive type
+  float draw1(float v = 0) { return v; }
+  float draw2(float *v = 0) { return v ? *v : 0; }
+};
+float* createPtr(float v) { static float val; val = v; return &val; }
+%}
+
 struct Display {
   // Bad Python wrappers were being generated when NULL used for primitive type
   float draw1(float v = NULL) { return v; }
   float draw2(float *v = NULL) { return v ? *v : 0; }
 };
 float* createPtr(float v) { static float val; val = v; return &val; }
-%}