diff --git a/tests/pkg_semtech-loramac/main.c b/tests/pkg_semtech-loramac/main.c
index 8ade459b61255eed74d85e87064c014390568f92..77fae587cf202d167d751ed2985fca938d10f57b 100644
--- a/tests/pkg_semtech-loramac/main.c
+++ b/tests/pkg_semtech-loramac/main.c
@@ -352,12 +352,20 @@ static int _cmd_loramac(int argc, char **argv)
             return 1;
         }
 
-        if (semtech_loramac_join(&loramac, join_type) != SEMTECH_LORAMAC_JOIN_SUCCEEDED) {
-            puts("Join procedure failed!");
-            return 1;
+        switch (semtech_loramac_join(&loramac, join_type)) {
+            case SEMTECH_LORAMAC_RESTRICTED:
+                puts("Cannot join: all channels are blocked (duty cycle)!");
+                return 1;
+            case SEMTECH_LORAMAC_JOIN_FAILED:
+                puts("Join procedure failed!");
+                return 1;
+            case SEMTECH_LORAMAC_JOIN_SUCCEEDED:
+                puts("Join procedure succeeded!");
+                break;
+            default: /* should not happen */
+                break;
         }
-
-        puts("Join procedure succeeded!");
+        return 0;
     }
     else if (strcmp(argv[1], "tx") == 0) {
         if (argc < 3) {