diff --git a/include/neuron/define.h b/include/neuron/define.h
index 3adeb790..b0211f41 100644
--- a/include/neuron/define.h
+++ b/include/neuron/define.h
@@ -67,7 +67,7 @@
 #define NEU_LOG_LEVEL_FATAL "fatal"
 
 #define NEU_CID_LNCLASS_LEN 12
-#define NEU_CID_LNTYPE_LEN 32
+#define NEU_CID_LNTYPE_LEN 40
 #define NEU_CID_LNPREFIX_LEN 10
 #define NEU_CID_LNINST_LEN 4
 #define NEU_CID_LDEVICE_LEN 32
@@ -85,7 +85,7 @@
 #define NEU_CID_DATASET_NAME_LEN 32
 #define NEU_CID_REPORT_NAME_LEN 32
 #define NEU_CID_REPORT_ID_LEN 64
-#define NEU_CID_ID_LEN 32
+#define NEU_CID_ID_LEN 40
 #define NEU_CID_REF_TYPE_LEN 32
 #define NEU_CID_IED_NAME_LEN 32
 #define NEU_CID_ACCESS_POINT_NAME_LEN 16