diff --git a/rules/tls.go b/rules/tls.go
index c0971b2..83c1c12 100644
--- a/rules/tls.go
+++ b/rules/tls.go
@@ -106,7 +106,7 @@ func (t *insecureConfigTLS) processTLSConfVal(n *ast.KeyValueExpr, c *gas.Contex
 }
 
 func (t *insecureConfigTLS) Match(n ast.Node, c *gas.Context) (*gas.Issue, error) {
-	if complit, ok := n.(*ast.CompositeLit); ok && c.Info.TypeOf(complit.Type).String() == t.requiredType {
+	if complit, ok := n.(*ast.CompositeLit); ok && complit.Type != nil && c.Info.TypeOf(complit.Type).String() == t.requiredType {
 		for _, elt := range complit.Elts {
 			if kve, ok := elt.(*ast.KeyValueExpr); ok {
 				issue := t.processTLSConfVal(kve, c)