diff --git a/pkg/network/payload/mptdata_test.go b/pkg/network/payload/mptdata_test.go
index d9db7bff6..4c02cce15 100644
--- a/pkg/network/payload/mptdata_test.go
+++ b/pkg/network/payload/mptdata_test.go
@@ -21,4 +21,18 @@ func TestMPTData_EncodeDecodeBinary(t *testing.T) {
 		}
 		testserdes.EncodeDecodeBinary(t, d, new(MPTData))
 	})
+
+	t.Run("exceeds MaxArraySize", func(t *testing.T) {
+		bytes := []byte{
+			// The first byte represents the number 0x1.
+			// It encodes the size of the outer array (the number or rows in the Nodes matrix).
+			0x1,
+			// This sequence of 9 bytes represents the number 0xffffffffffffffff.
+			// It encodes the size of the first row in the Nodes matrix.
+			// This size exceeds the maximum array size, thus the decoder should
+			// return an error.
+			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
+		}
+		require.Error(t, testserdes.DecodeBinary(bytes, new(MPTData)))
+	})
 }