diff --git a/vlib/v/checker/checker_test.v b/vlib/v/checker/checker_test.v
index 4a4cfad238..3f621b1006 100644
--- a/vlib/v/checker/checker_test.v
+++ b/vlib/v/checker/checker_test.v
@@ -1,10 +1,15 @@
 import os
 import term
 
+fn clean_line_endings(s string) string {
+	return s.trim_space().replace(' \n', '\n').replace(' \r\n', '\n').replace('\r\n', '\n').trim('\n')
+}
+
 fn test_all() {
 	mut total_errors := 0
 	vexe := os.getenv('VEXE')
-	// vroot := os.dir(vexe)
+	vroot := os.dir(vexe)
+	os.chdir(vroot)
 	dir := 'vlib/v/checker/tests'
 	files := os.ls(dir) or {
 		panic(err)
@@ -16,8 +21,8 @@ fn test_all() {
 	}
 	for test in tests {
 		path := os.join_path(dir, test).replace('\\', '/')
-		print(test + ' ')
 		program := path.replace('.vv', '.v')
+		print(program + ' ')
 		os.cp(path, program) or {
 			panic(err)
 		}
@@ -28,10 +33,8 @@ fn test_all() {
 		mut expected := os.read_file(program.replace('.v', '') + '.out') or {
 			panic(err)
 		}
-		expected = expected.trim_space().replace(' \n', '\n').replace(' \r\n', '\n').replace('\r\n',
-			'\n').trim('\n')
-		found := res.output.trim_space().replace(' \n', '\n').replace(' \r\n', '\n').replace('\r\n',
-			'\n').trim('\n')
+		expected = clean_line_endings(expected)
+		found := clean_line_endings(res.output)
 		if expected != found {
 			println(term.red('FAIL'))
 			println('============')
@@ -44,6 +47,7 @@ fn test_all() {
 			total_errors++
 		} else {
 			println(term.green('OK'))
+			os.rm( program )
 		}
 	}
 	assert total_errors == 0
diff --git a/vlib/v/checker/tests/ambiguous_function_call_a.v b/vlib/v/checker/tests/ambiguous_function_call_a.v
deleted file mode 100644
index e8ec08cdf7..0000000000
--- a/vlib/v/checker/tests/ambiguous_function_call_a.v
+++ /dev/null
@@ -1,7 +0,0 @@
-fn foo(foo int) {
-	foo(foo + 1)
-}
-
-fn main() {
-	foo(5)
-}
diff --git a/vlib/v/checker/tests/ambiguous_function_call_b.v b/vlib/v/checker/tests/ambiguous_function_call_b.v
deleted file mode 100644
index c1dbab3b34..0000000000
--- a/vlib/v/checker/tests/ambiguous_function_call_b.v
+++ /dev/null
@@ -1,8 +0,0 @@
-fn foo() {
-	foo := 1
-	foo(foo)
-}
-
-fn main() {
-	foo()
-}
diff --git a/vlib/v/checker/tests/division_by_zero_float_err.v b/vlib/v/checker/tests/division_by_zero_float_err.v
deleted file mode 100644
index b5c1e7cb0b..0000000000
--- a/vlib/v/checker/tests/division_by_zero_float_err.v
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-	println(1.0/0.0)
-}
diff --git a/vlib/v/checker/tests/division_by_zero_int_err.v b/vlib/v/checker/tests/division_by_zero_int_err.v
deleted file mode 100644
index 996814a9a6..0000000000
--- a/vlib/v/checker/tests/division_by_zero_int_err.v
+++ /dev/null
@@ -1,3 +0,0 @@
-fn main() {
-	println(1/0)
-}
diff --git a/vlib/v/checker/tests/struct_field_name_duplicate_err.v b/vlib/v/checker/tests/struct_field_name_duplicate_err.v
deleted file mode 100644
index e59e586300..0000000000
--- a/vlib/v/checker/tests/struct_field_name_duplicate_err.v
+++ /dev/null
@@ -1,5 +0,0 @@
-struct A {
-	a int
-	a string
-}
-fn main(){}