diff --git a/src/buffer.c b/src/buffer.c
index ff7c50f..a47342a 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -5278,24 +5278,21 @@
     int		buflen,
     int		add_file)	// Add "file" before the arg number
 {
-    char_u	*p;
-
     if (ARGCOUNT <= 1)		// nothing to do
 	return FALSE;
 
-    p = buf + STRLEN(buf);	// go to the end of the buffer
-    if (p - buf + 35 >= buflen)	// getting too long
-	return FALSE;
-    *p++ = ' ';
-    *p++ = '(';
-    if (add_file)
+    char *msg;
+    switch ((wp->w_arg_idx_invalid ? 1 : 0) + (add_file ? 2 : 0))
     {
-	STRCPY(p, "file ");
-	p += 5;
+	case 0: msg = _(" (%d of %d)"); break;
+	case 1: msg = _(" ((%d) of %d)"); break;
+	case 2: msg = _(" (file %d of %d)"); break;
+	case 3: msg = _(" (file (%d) of %d)"); break;
     }
-    vim_snprintf((char *)p, (size_t)(buflen - (p - buf)),
-		wp->w_arg_idx_invalid ? "(%d) of %d)"
-				  : "%d of %d)", wp->w_arg_idx + 1, ARGCOUNT);
+
+    char_u *p = buf + STRLEN(buf);	// go to the end of the buffer
+    vim_snprintf((char *)p, (size_t)(buflen - (p - buf)), msg,
+						  wp->w_arg_idx + 1, ARGCOUNT);
     return TRUE;
 }