diff --git a/psycopg/typecast_builtins.c b/psycopg/typecast_builtins.c
index e0481a41..0fc109d8 100644
--- a/psycopg/typecast_builtins.c
+++ b/psycopg/typecast_builtins.c
@@ -16,8 +16,8 @@ static long int typecast_LONGINTEGERARRAY_types[] = {1016, 0};
 static long int typecast_INTEGERARRAY_types[] = {1005, 1006, 1007, 0};
 static long int typecast_FLOATARRAY_types[] = {1017, 1021, 1022, 0};
 static long int typecast_DECIMALARRAY_types[] = {1231, 0};
-static long int typecast_UNICODEARRAY_types[] = {705, 1002, 1003, 1009, 1014, 1015, 0};
-static long int typecast_STRINGARRAY_types[] = {705, 1002, 1003, 1009, 1014, 1015, 0};
+static long int typecast_UNICODEARRAY_types[] = {1002, 1003, 1009, 1014, 1015, 0};
+static long int typecast_STRINGARRAY_types[] = {1002, 1003, 1009, 1014, 1015, 0};
 static long int typecast_BOOLEANARRAY_types[] = {1000, 0};
 static long int typecast_DATETIMEARRAY_types[] = {1115, 1185, 0};
 static long int typecast_TIMEARRAY_types[] = {1183, 1270, 0};