diff --git a/src/exceptions.c b/src/exceptions.c
index 1c83461..30d0845 100644
--- a/src/exceptions.c
+++ b/src/exceptions.c
@@ -28,7 +28,9 @@
  */
 static KrkValue krk_initException(int argc, const KrkValue argv[], int hasKw) {
 	KrkInstance * self = AS_INSTANCE(argv[0]);
-	krk_attachNamedValue(&self->fields, "arg", argc > 1 ? argv[1] : NONE_VAL());
+	if (argc > 1) {
+		krk_attachNamedValue(&self->fields, "arg", argv[1]);
+	}
 	return argv[0];
 }
 
diff --git a/test/testBareFinally.krk.expect b/test/testBareFinally.krk.expect
index 87b3e92..e307e43 100644
--- a/test/testBareFinally.krk.expect
+++ b/test/testBareFinally.krk.expect
@@ -1,4 +1,4 @@
-ValueError(None)
+ValueError()
 Done?
 try
 finally
diff --git a/test/testContextManagerException.krk.expect b/test/testContextManagerException.krk.expect
index 701ba71..5e82577 100644
--- a/test/testContextManagerException.krk.expect
+++ b/test/testContextManagerException.krk.expect
@@ -12,4 +12,4 @@ Before
 Entering
 Raising
 Exiting with [<class 'type'>, <class 'ValueError'>, <class 'list'>]
-ValueError(None)
+ValueError()
diff --git a/test/testContextManagerRaisesInExit.krk.expect b/test/testContextManagerRaisesInExit.krk.expect
index d43d526..913fe1e 100644
--- a/test/testContextManagerRaisesInExit.krk.expect
+++ b/test/testContextManagerRaisesInExit.krk.expect
@@ -2,4 +2,4 @@ Before
 Entering
 Raising
 Exiting with [<class 'type'>, <class 'ValueError'>, <class 'list'>]
-TypeError(None)
+TypeError()
diff --git a/test/testMultipleExcept.krk.expect b/test/testMultipleExcept.krk.expect
index 1535ea3..594829a 100644
--- a/test/testMultipleExcept.krk.expect
+++ b/test/testMultipleExcept.krk.expect
@@ -16,4 +16,4 @@ Running finally
 Function exit
 with <class 'NameError'>
 Running finally
-NameError was not caught: NameError(None)
+NameError was not caught: NameError()