diff --git a/did.go b/did.go
index c7cd28d..d043023 100644
--- a/did.go
+++ b/did.go
@@ -418,7 +418,7 @@ func (p *parser) parseFragment() parserStep {
 // other parser steps use this function to exit the state machine with an error
 func (p *parser) errorf(index int, format string, args ...interface{}) parserStep {
 	p.currentIndex = index
-	p.err = fmt.Errorf(format, args)
+	p.err = fmt.Errorf(format, args...)
 	return nil
 }
 
diff --git a/did_test.go b/did_test.go
index a25d5f0..6b67d7f 100644
--- a/did_test.go
+++ b/did_test.go
@@ -450,6 +450,20 @@ func TestParse(t *testing.T) {
 	})
 }
 
+func Test_errorf(t *testing.T) {
+	p := &parser{}
+	p.errorf(10, "%s,%s", "a", "b")
+
+	if p.currentIndex != 10 {
+		t.Errorf("did not set currentIndex")
+	}
+
+	e := p.err.Error()
+	if e != "a,b" {
+		t.Errorf("err message is: '%s' expected: 'a,b'", e)
+	}
+}
+
 func Test_isNotValidIDChar(t *testing.T) {
 	a := []byte{'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M',
 		'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'Z', 'Y', 'Z',