--- librsvg-2.39.0.orig/rsvg-base.c
+++ librsvg-2.39.0/rsvg-base.c
@@ -2190,8 +2190,7 @@
     dir = g_file_get_path (base);
     g_object_unref (base);
 
-    /* FIXME portability */
-    cdir = canonicalize_file_name (dir);
+    cdir = realpath (dir, NULL);
     g_free (dir);
     if (cdir == NULL)
         goto deny;
@@ -2200,8 +2199,7 @@
     if (path == NULL)
         goto deny;
 
-    /* FIXME portability */
-    cpath = canonicalize_file_name (path);
+    cpath = realpath (path, NULL);
     g_free (path);
 
     if (cpath == NULL)