diff --git a/cmd/tools/vtest-self.v b/cmd/tools/vtest-self.v
index 1fd8ccaec4..c7b06f0071 100644
--- a/cmd/tools/vtest-self.v
+++ b/cmd/tools/vtest-self.v
@@ -95,7 +95,7 @@ fn main() {
 	args := os.args.clone()
 	args_string := args[1..].join(' ')
 	cmd_prefix := args_string.all_before('test-self')
-	title := 'testing all fixed tests'
+	title := 'testing all tests'
 	all_test_files := os.walk_ext(os.join_path(vroot, 'vlib'), '_test.v')
 	testing.eheader(title)
 	mut tsession := testing.new_test_session(cmd_prefix)
diff --git a/vlib/v/checker/tests/receiver_unknown_type_single_letter.out b/vlib/v/checker/tests/receiver_unknown_type_single_letter.out
new file mode 100644
index 0000000000..bd78937087
--- /dev/null
+++ b/vlib/v/checker/tests/receiver_unknown_type_single_letter.out
@@ -0,0 +1,3 @@
+vlib/v/checker/tests/receiver_unknown_type_single_letter.vv:1:5: error: unknown type `A`
+    1 | fn (p A) foo() {}
+      |     ~~~
diff --git a/vlib/v/checker/tests/receiver_unknown_type_single_letter.vv b/vlib/v/checker/tests/receiver_unknown_type_single_letter.vv
new file mode 100644
index 0000000000..4c00043e35
--- /dev/null
+++ b/vlib/v/checker/tests/receiver_unknown_type_single_letter.vv
@@ -0,0 +1,2 @@
+fn (p A) foo() {}
+