diff --git a/extras/tests/JsonVariant/add.cpp b/extras/tests/JsonVariant/add.cpp
index 526e914d..fec99c5a 100644
--- a/extras/tests/JsonVariant/add.cpp
+++ b/extras/tests/JsonVariant/add.cpp
@@ -43,4 +43,14 @@ TEST_CASE("JsonVariant::add()") {
 
     REQUIRE(var.as<std::string>() == "{\"val\":123}");
   }
+
+  SECTION("add to linked array") {
+    StaticJsonDocument<1024> doc2;
+    doc2.add(42);
+    var.link(doc2);
+
+    var.add(666);  // no-op
+
+    CHECK(var.as<std::string>() == "[42]");
+  }
 }
diff --git a/extras/tests/JsonVariant/subscript.cpp b/extras/tests/JsonVariant/subscript.cpp
index a03b2914..0b83d6aa 100644
--- a/extras/tests/JsonVariant/subscript.cpp
+++ b/extras/tests/JsonVariant/subscript.cpp
@@ -138,13 +138,12 @@ TEST_CASE("JsonVariant::operator[]") {
     CHECK(var["hello"].as<std::string>() == "world");
   }
 
-  SECTION("try to set value to linked object") {
+  SECTION("set value to linked object") {
     StaticJsonDocument<1024> doc1, doc2;
     doc2["hello"] = "world";
     var.link(doc2);
 
-    // The link is read-only; the following line should have no side effect
-    var["tutu"] = "toto";
+    var["tutu"] = "toto";  // no-op
 
     CHECK(doc.as<std::string>() == "{\"hello\":\"world\"}");
     CHECK(doc2.as<std::string>() == "{\"hello\":\"world\"}");