diff --git a/Source/Modules/php.cxx b/Source/Modules/php.cxx
index bc804cfc9..4880c9c2f 100644
--- a/Source/Modules/php.cxx
+++ b/Source/Modules/php.cxx
@@ -1833,7 +1833,10 @@ public:
     Printf(s_oinit, "  SWIGTYPE_%s_ce->create_object = %s_object_new;\n", class_name, class_name);
     Printf(s_oinit, "  memcpy(&%s_object_handlers,zend_get_std_object_handlers(), sizeof(zend_object_handlers));\n", class_name);
     Printf(s_oinit, "  %s_object_handlers.clone_obj = NULL;\n", class_name);
+    // If not defined we aren't wrapping this type being passed or returned.
+    Printf(s_oinit, "#ifdef SWIGTYPE_p%s\n", SwigType_manglestr(Getattr(n, "classtypeobj")));
     Printf(s_oinit, "  SWIG_TypeClientData(SWIGTYPE_p%s,SWIGTYPE_%s_ce);\n", SwigType_manglestr(Getattr(n, "classtypeobj")), class_name);
+    Printf(s_oinit, "#endif\n");
     Printf(s_oinit, "}\n\n");
 
     classnode = n;