diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index f428d757e8888d6a49841b1401a5ae92b8575d07..9a71dae223e81d94343d1ae72b54636bca290e12 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -3983,15 +3983,17 @@ static void qeth_unregister_dbf_views(void)
 	}
 }
 
-void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *text, ...)
+void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...)
 {
 	char dbf_txt_buf[32];
+	va_list args;
 
 	if (level > (qeth_dbf[dbf_nix].id)->level)
 		return;
-	snprintf(dbf_txt_buf, sizeof(dbf_txt_buf), text);
+	va_start(args, fmt);
+	vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args);
+	va_end(args);
 	debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf);
-	
 }
 EXPORT_SYMBOL_GPL(qeth_dbf_longtext);