diff --git a/src/plugins/irc/irc-server.c b/src/plugins/irc/irc-server.c
index 40bb47b7b..b82df75c4 100644
--- a/src/plugins/irc/irc-server.c
+++ b/src/plugins/irc/irc-server.c
@@ -484,6 +484,9 @@ irc_server_eval_fingerprint (struct t_irc_server *server)
     }
     return fingerprint_eval;
 #else
+    /* make C compiler happy */
+    (void) server;
+
     return strdup ("");
 #endif /* HAVE_GNUTLS */
 }