diff --git a/openair2/LAYER2/NR_MAC_UE/mac_defs.h b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
index f8b9f18c11..b43937d362 100644
--- a/openair2/LAYER2/NR_MAC_UE/mac_defs.h
+++ b/openair2/LAYER2/NR_MAC_UE/mac_defs.h
@@ -307,8 +307,8 @@ typedef struct {
   NR_PUCCH_Resource_t *pucch_resource;
   uint32_t ack_payload;
   uint8_t sr_payload;
-  uint32_t csi_part1_payload;
-  uint32_t csi_part2_payload;
+  uint64_t csi_part1_payload;
+  uint64_t csi_part2_payload;
   int n_sr;
   int n_csi;
   int n_harq;