diff --git a/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c b/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
index b8fd148876..409f1599ab 100644
--- a/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
+++ b/openair2/LAYER2/nr_rlc/nr_rlc_oai_api.c
@@ -114,14 +114,19 @@ logical_chan_id_t nr_rlc_get_lcid_from_rb(int ue_id, bool is_srb, int rb_id)
   for (logical_chan_id_t id = 1; id <= 32; id++) {
     nr_rlc_rb_t *rb = &ue->lcid2rb[id - 1];
     if (is_srb) {
-      if (rb->type == NR_RLC_SRB && rb->choice.srb_id == rb_id)
+      if (rb->type == NR_RLC_SRB && rb->choice.srb_id == rb_id) {
+        nr_rlc_manager_unlock(nr_rlc_ue_manager);
         return id;
+      }
     } else {
-      if (rb->type == NR_RLC_DRB && rb->choice.drb_id == rb_id)
+      if (rb->type == NR_RLC_DRB && rb->choice.drb_id == rb_id) {
+        nr_rlc_manager_unlock(nr_rlc_ue_manager);
         return id;
+      }
     }
   }
   LOG_E(RLC, "Couldn't find LCID corresponding to %s %d\n", is_srb ? "SRB" : "DRB", rb_id);
+  nr_rlc_manager_unlock(nr_rlc_ue_manager);
   return 0;
 }