diff --git a/nshlib/nsh_fscmds.c b/nshlib/nsh_fscmds.c
index f47dca896..35d5c81bd 100644
--- a/nshlib/nsh_fscmds.c
+++ b/nshlib/nsh_fscmds.c
@@ -121,6 +121,7 @@ static char g_iobuffer[IOBUFFERSIZE];
  * Name: trim_dir
  ****************************************************************************/
 
+#if !defined(CONFIG_NSH_DISABLE_CP) || defined(CONFIG_NSH_FULLPATH)
 static void trim_dir(char *arg)
 {
  /* Skip any trailing '/' characters (unless it is also the leading '/') */
@@ -132,6 +133,7 @@ static void trim_dir(char *arg)
       len--;
    }
 }
+#endif
 
 /****************************************************************************
  * Name: nsh_getdirpath