diff --git a/RISCOS/Modules/getpath_riscos.c b/RISCOS/Modules/getpath_riscos.c
index 7582b17..8b36952 100644
--- a/RISCOS/Modules/getpath_riscos.c
+++ b/RISCOS/Modules/getpath_riscos.c
@@ -5,7 +5,7 @@
 
 static void
 calculate_path()
-{ char *pypath=getenv("Python$Path");
+{ char *pypath=Py_GETENV("Python$Path");
   if(pypath)
   { module_search_path=malloc(strlen(pypath)+1);
     if (module_search_path) sprintf(module_search_path,"%s",pypath);