diff --git a/src/mred/mred.cxx b/src/mred/mred.cxx
index 3239194f78..bdd48e5536 100644
--- a/src/mred/mred.cxx
+++ b/src/mred/mred.cxx
@@ -3805,6 +3805,7 @@ void wxDrop_Runtime(char **argv, int argc)
 
   for (i = 0; i < argc; i++) {
     Scheme_Object *p[1];
+    p[0] = scheme_make_path(argv[i]);
     wxDo(wxs_app_file_proc, 1, p);
   }
 }