diff --git a/gnupg/gpg.conf b/gnupg/gpg.conf
index 95e332f6..b54dc37e 100644
--- a/gnupg/gpg.conf
+++ b/gnupg/gpg.conf
@@ -32,8 +32,8 @@ use-agent
 # Use other SHAs than SHA1 if possible. I think that everyone who I use GPG with use enough up-to-date version to support other SHAs than SHA1.
 personal-digest-preferences SHA512,SHA384,SHA256,SHA224,RIPEMD160,SHA1
 
-# Show the LONG KEYID by default.
-keyid-format LONG
+# Show the LONG KEYID by default and tell that it's hexadecimal string.
+keyid-format 0xLONG
 
 comment Public key: http://mkaysi.github.com/PGP/key.txt
 comment Fingerprint = 24BC 1573 B8EE D666 D10A  AA65 4DB5 3CFE 82A4 6728