diff --git a/sys/include/net/loramac.h b/sys/include/net/loramac.h
index 48b432a802..c602718c49 100644
--- a/sys/include/net/loramac.h
+++ b/sys/include/net/loramac.h
@@ -547,6 +547,15 @@ extern "C" {
  */
 #define LORAMAC_NETWORK_ID_LEN                  (3U)
 
+/**
+ * @brief   Maximum length for channel mask
+ *
+ *          The actual length is set by each region-specific LoRaMac
+ *          implementation (see CHANNELS_MASK_SIZE), which
+ *          automatically slices down the channel array mask.
+ */
+#define LORAMAC_CHANNELS_MASK_MAX_LEN                     (6U)
+
 /** @} */
 
 /**
diff --git a/sys/shell/commands/sc_loramac.c b/sys/shell/commands/sc_loramac.c
index 72cd487f41..540be6620a 100644
--- a/sys/shell/commands/sc_loramac.c
+++ b/sys/shell/commands/sc_loramac.c
@@ -58,7 +58,7 @@ static void _loramac_tx_usage(void)
 static void _loramac_set_usage(void)
 {
     puts("Usage: loramac set <deveui|appeui|appkey|appskey|nwkskey|devaddr|"
-         "class|dr|adr|public|netid|tx_power|rx2_freq|rx2_dr|ul_cnt> <value>");
+         "class|dr|adr|public|netid|tx_power|rx2_freq|rx2_dr|ul_cnt|ch_mask> <value>");
 }
 
 static void _loramac_get_usage(void)
@@ -347,6 +347,22 @@ int _loramac_handler(int argc, char **argv)
             uint32_t counter = atoi(argv[3]);
             semtech_loramac_set_uplink_counter(&loramac, counter);
         }
+        else if (strcmp("ch_mask", argv[2]) == 0) {
+            if (argc < 4) {
+                puts("Usage: loramac set ch_mask <value>");
+                puts("Example (sets channels 0-3): loramac set ch_mask 000F00000000000000000000");
+                return 1;
+            }
+            uint16_t mask[LORAMAC_CHANNELS_MASK_MAX_LEN] = { 0 };
+            uint8_t tmp[LORAMAC_CHANNELS_MASK_MAX_LEN*2];
+            fmt_hex_bytes(tmp, argv[3]);
+            for (size_t i = 0, j = 0; i < LORAMAC_CHANNELS_MASK_MAX_LEN; i++, j+=2) {
+                /* copy over to span a 16-bit -wide unsigned integer */
+                mask[i] |= tmp[j] << 8;
+                mask[i] |= tmp[j+1];
+            }
+            semtech_loramac_set_channels_mask(&loramac, mask);
+        }
         else {
             _loramac_set_usage();
             return 1;