diff --git a/include/util/tdef.h b/include/util/tdef.h
index 695b4159fd..4e1fb21838 100644
--- a/include/util/tdef.h
+++ b/include/util/tdef.h
@@ -631,7 +631,7 @@ enum { RAND_ERR_MEMORY = 1, RAND_ERR_FILE = 2, RAND_ERR_NETWORK = 4 };
 #define TSDB_CONFIG_VALUE_LEN  64
 #define TSDB_CONFIG_SCOPE_LEN  8
 #define TSDB_CONFIG_NUMBER     16
-#define TSDB_CONFIG_PATH_LEN   128
+#define TSDB_CONFIG_PATH_LEN   4096
 #define TSDB_CONFIG_INFO_LEN   64
 
 #define QUERY_ID_SIZE      20