diff --git a/parser/test-common.go b/parser/test-common.go
index 6cb90a7..74e3f82 100644
--- a/parser/test-common.go
+++ b/parser/test-common.go
@@ -3,12 +3,18 @@ package parser
 import "io"
 import "testing"
 import "strings"
+import "git.tebibyte.media/sashakoshka/fspl/lexer"
 import "git.tebibyte.media/sashakoshka/fspl/errors"
 import "git.tebibyte.media/sashakoshka/fspl/testcommon"
 
 func testString (test *testing.T, correct string, input string) {
 	ast := Tree { }
-	err := ast.Parse("input.fspl", strings.NewReader(input))
+	lx, err := lexer.LexReader("input.fspl", strings.NewReader(input))
+	if err != nil && err != io.EOF{
+		test.Error("lexer returned error:\n" + errors.Format(err))
+		return
+	}
+	err = ast.Parse(lx)
 	if err != nil && err != io.EOF{
 		test.Error("parser returned error:\n" + errors.Format(err))
 		return