diff --git a/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig b/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h
index 9f5b680..d9462f7 100644
--- a/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h.orig
+++ b/linux-2.6/drivers/isdn/hardware/eicon/divacapi.h
@@ -445,7 +445,7 @@ struct _DIVA_CAPI_ADAPTER {
 #define CAPI_MAX_HEAD_LINE_SPACE        89
 #define CAPI_MAX_DATE_TIME_LENGTH       18
 
-#define T30_MAX_STATION_ID_LENGTH       20
+#define T30_MAX_STATION_ID_LENGTH       30
 #define T30_MAX_SUBADDRESS_LENGTH       20
 #define T30_MAX_PASSWORD_LENGTH         20