diff --git a/loxi_ir/ir_offset.py b/loxi_ir/ir_offset.py
index 490c6b0..64c01b6 100644
--- a/loxi_ir/ir_offset.py
+++ b/loxi_ir/ir_offset.py
@@ -104,6 +104,8 @@
     of_desc_str_t = (ofp_constants["OF_DESC_STR_LEN"], True),
     of_serial_num_t = (ofp_constants["OF_SERIAL_NUM_LEN"], True),
     of_str64_t = (64, True),
+    of_str32_t = (32, True),
+    of_str6_t = (6, True),
     of_match_v1_t = (40, True),
     of_match_v2_t = (88, True),
     of_match_v3_t = (8, False),