--- a/python/fltk_wrap.cpp
+++ b/python/fltk_wrap.cpp
@@ -144,7 +144,9 @@
 # define _SCL_SECURE_NO_DEPRECATE
 #endif
 
-
+int _fl_filename_isdir_quick(const char *n)  {
+    return 0;
+}
 
 /* Python.h has to appear first */
 #include <Python.h>