diff --git a/srsue/src/phy/phch_worker.cc b/srsue/src/phy/phch_worker.cc
index 0f2e75920..b3a33ea6c 100644
--- a/srsue/src/phy/phch_worker.cc
+++ b/srsue/src/phy/phch_worker.cc
@@ -566,7 +566,7 @@ bool phch_worker::decode_pdcch_dl(srsue::mac_interface_phy::mac_grant_t* grant)
 
     last_dl_pdcch_ncce = srslte_ue_dl_get_ncce(&ue_dl);
 
-    char hexstr[SRSLTE_DCI_MAX_BITS/8];
+    char hexstr[512];
     hexstr[0]='\0';
     if (log_h->get_level() >= srslte::LOG_LEVEL_INFO) {
       srslte_vec_sprint_hex(hexstr, sizeof(hexstr), dci_msg.data, dci_msg.nof_bits);
@@ -804,7 +804,7 @@ bool phch_worker::decode_pdcch_ul(mac_interface_phy::mac_grant_t* grant)
       grant->has_cqi_request = dci_unpacked.cqi_request;
       ret = true; 
       
-      char hexstr[SRSLTE_DCI_MAX_BITS/8];
+      char hexstr[512];
       hexstr[0]='\0';
       if (log_h->get_level() >= srslte::LOG_LEVEL_INFO) {
         srslte_vec_sprint_hex(hexstr, sizeof(hexstr), dci_msg.data, dci_msg.nof_bits);