diff --git a/M6502/HarteTest_6502/opcode_test_suite_t.h b/M6502/HarteTest_6502/opcode_test_suite_t.h
index 0e32687..acccf0a 100644
--- a/M6502/HarteTest_6502/opcode_test_suite_t.h
+++ b/M6502/HarteTest_6502/opcode_test_suite_t.h
@@ -18,5 +18,5 @@ public:
     [[nodiscard]] auto begin() const noexcept { return array().begin(); }
     [[nodiscard]] auto end() const noexcept { return array().end(); }
 
-    EightBit::co_generator_t<test_t> generator();
+    [[nodiscard]] EightBit::co_generator_t<test_t> generator();
 };
diff --git a/M6502/HarteTest_6502/processor_test_suite_t.h b/M6502/HarteTest_6502/processor_test_suite_t.h
index b2f0bc7..3e00434 100644
--- a/M6502/HarteTest_6502/processor_test_suite_t.h
+++ b/M6502/HarteTest_6502/processor_test_suite_t.h
@@ -16,5 +16,5 @@ public:
 
 	std::string_view location() const noexcept { return m_location; }
 
-	EightBit::co_generator_t<opcode_test_suite_t> generator();
+	[[nodiscard]] EightBit::co_generator_t<opcode_test_suite_t> generator();
 };