diff --git a/openair1/PHY/NR_TRANSPORT/nr_csi_rs.c b/openair1/PHY/NR_TRANSPORT/nr_csi_rs.c
index 0efd9b8fca..87edb7a157 100644
--- a/openair1/PHY/NR_TRANSPORT/nr_csi_rs.c
+++ b/openair1/PHY/NR_TRANSPORT/nr_csi_rs.c
@@ -37,7 +37,7 @@ void nr_generate_csi_rs(PHY_VARS_gNB *gNB,
   int32_t **txdataF = gNB->common_vars.txdataF;
   int txdataF_offset = (slot%2)*frame_parms.samples_per_slot_wCP;
   uint32_t **gold_csi_rs = gNB->nr_gold_csi_rs[slot];
-  int16_t mod_csi[frame_parms.symbols_per_slot][NR_MAX_CSI_RS_LENGTH>>1];
+  int16_t mod_csi[frame_parms.symbols_per_slot][NR_MAX_CSI_RS_LENGTH>>1] __attribute__((aligned(16)));;
   uint16_t b = csi_params.freq_domain;
   uint16_t n, csi_bw, csi_start, p, k, l, mprime, na, kpn, csi_length;
   uint8_t size, ports, kprime, lprime, i, gs;