diff --git a/xdu.c b/xdu.c
index 434c1da..7412f60 100644
--- a/xdu.c
+++ b/xdu.c
@@ -61,6 +61,8 @@
 #define	MAXPATH		4096    /* max total pathname length */
 #define	NCOLS		5       /* default number of columns in display */
 
+char* root_prefix = "[root]";
+
 /* What we IMPORT from xwin.c */
 extern int xsetup(), xmainloop(), xdrawrect(), xrepaint();
 
@@ -223,7 +225,7 @@ int main(argc, argv)
 int argc;
 char **argv;
 {
-    top.name = strdup("[root]");
+    top.name = root_prefix;
     top.size = -1;
 
     xsetup(&argc, argv);
@@ -708,7 +710,7 @@ void printpath(int x, int y)
         np = np->parent;
         free(tmp_path);
     }
-    tmp_path = path + 6;
+    tmp_path = path + strlen(root_prefix);
     printf("%s\n", tmp_path);
     free(path);
 }