diff --git a/Tests/AK/TestHashMap.cpp b/Tests/AK/TestHashMap.cpp
index b04ab35f32..25e248b7a6 100644
--- a/Tests/AK/TestHashMap.cpp
+++ b/Tests/AK/TestHashMap.cpp
@@ -83,8 +83,11 @@ TEST_CASE(remove_all_matching)
     EXPECT_EQ(map.size(), 4u);
 
     EXPECT_EQ(map.remove_all_matching([&](int key, String const& value) { return key == 1 || value == "Two"; }), true);
-
     EXPECT_EQ(map.size(), 2u);
+
+    EXPECT_EQ(map.remove_all_matching([&](int, String const&) { return false; }), false);
+    EXPECT_EQ(map.size(), 2u);
+
     EXPECT(map.contains(3));
     EXPECT(map.contains(4));