diff --git a/src/fe-common/irc/fe-ctcp.c b/src/fe-common/irc/fe-ctcp.c
index c73399be..14893966 100644
--- a/src/fe-common/irc/fe-ctcp.c
+++ b/src/fe-common/irc/fe-ctcp.c
@@ -128,7 +128,10 @@ static void ctcp_ping_reply(IRC_SERVER_REC *server, const char *data,
 
 	g_return_if_fail(data != NULL);
 
-	if (sscanf(data, "%ld %ld", &tv, &tv2) < 1) {
+	if (sscanf(data,
+	           "%" G_GINT64_FORMAT " "
+	           "%" G_GINT64_FORMAT,
+	           &tv, &tv2) < 1) {
 		char *tmp = g_strconcat("PING ", data, NULL);
 		ctcp_default_reply(server, tmp, nick, addr, target);
 		g_free(tmp);
diff --git a/src/irc/core/irc-commands.c b/src/irc/core/irc-commands.c
index cba909c1..5f234c54 100644
--- a/src/irc/core/irc-commands.c
+++ b/src/irc/core/irc-commands.c
@@ -544,7 +544,10 @@ static void cmd_ping(const char *data, IRC_SERVER_REC *server, WI_ITEM_REC *item
 
 	tv = g_get_real_time();
 
-	str = g_strdup_printf("%s PING %ld %ld", data, tv / G_TIME_SPAN_SECOND, tv % G_TIME_SPAN_SECOND);
+	str = g_strdup_printf("%s PING "
+	                      "%" G_GINT64_FORMAT " "
+	                      "%" G_GINT64_FORMAT,
+	                      data, tv / G_TIME_SPAN_SECOND, tv % G_TIME_SPAN_SECOND);
 	signal_emit("command ctcp", 3, str, server, item);
 	g_free(str);
 }