diff --git a/LR35902/SM83.HarteTest/SingleStepTests.cs b/LR35902/SM83.HarteTest/SingleStepTests.cs
index 3f2c46e..ea17b13 100644
--- a/LR35902/SM83.HarteTest/SingleStepTests.cs
+++ b/LR35902/SM83.HarteTest/SingleStepTests.cs
@@ -56,7 +56,7 @@ namespace SM83.HarteTest
 
                 if (checker.Unimplemented)
                 {
-                    Assert.Inconclusive($"Opcode not implemented: {test.Name}");
+                    Assert.Fail($"Opcode not implemented: {test.Name}");
                     return;
                 }
 
diff --git a/M6502/M6502.HarteTest/SingleStepTests.cs b/M6502/M6502.HarteTest/SingleStepTests.cs
index a91e3fc..a19d76d 100644
--- a/M6502/M6502.HarteTest/SingleStepTests.cs
+++ b/M6502/M6502.HarteTest/SingleStepTests.cs
@@ -47,7 +47,7 @@ namespace M6502.HarteTest
 
                 if (checker.Unimplemented)
                 {
-                    Assert.Inconclusive($"Opcode not implemented: {test.Name}");
+                    Assert.Fail($"Opcode not implemented: {test.Name}");
                     return;
                 }
 
diff --git a/Z80/Z80.HarteTest/SingleStepTests.cs b/Z80/Z80.HarteTest/SingleStepTests.cs
index d080d7e..41f8fbe 100644
--- a/Z80/Z80.HarteTest/SingleStepTests.cs
+++ b/Z80/Z80.HarteTest/SingleStepTests.cs
@@ -56,7 +56,7 @@ namespace Z80.HarteTest
 
                 if (checker.Unimplemented)
                 {
-                    Assert.Inconclusive($"Opcode not implemented: {test.Name}");
+                    Assert.Fail($"Opcode not implemented: {test.Name}");
                     return;
                 }