diff --git a/INSTALL b/INSTALL
index bf0046c80..182992fec 100644
--- a/INSTALL
+++ b/INSTALL
@@ -20,7 +20,10 @@
   $ make test
   $ make install
 
- [If any of these steps fails, see section Installation in Detail below.]
+ [If any of these steps fails, see section Installation in Detail below.
+ During "./config", you will see the message
+      c_rehash: rehashing skipped ('openssl' program not available).
+ This is inevitable at that stage and does not indicate any error.]
 
  This will build and install OpenSSL in the default location, which is (for
  historical reasons) /usr/local/ssl. If you want to install it anywhere else,