diff --git a/src/cssparser.cc b/src/cssparser.cc
index 607467d..fcf9f5f 100644
--- a/src/cssparser.cc
+++ b/src/cssparser.cc
@@ -1610,9 +1610,8 @@ char * CssParser::parseUrl()
    }
 
    if (urlStr) {
-      DilloUrl *dilloUrl = a_Url_new(urlStr->str, a_Url_str(this->baseUrl)).release();
-      char *url = dStrdup(a_Url_str(dilloUrl));
-      delete dilloUrl;
+      auto dilloUrl = a_Url_new(urlStr->str, a_Url_str(this->baseUrl));
+      char *url = dStrdup(a_Url_str(dilloUrl.get()));
       dStr_free(urlStr, 1);
       return url;
    } else {
diff --git a/src/form.cc b/src/form.cc
index dfeac39..b1bd537 100644
--- a/src/form.cc
+++ b/src/form.cc
@@ -572,7 +572,7 @@ void Html_tag_open_input(DilloHtml *html, const char *tag, int tagsize)
  */
 void Html_tag_open_isindex(DilloHtml *html, const char *tag, int tagsize)
 {
-   DilloUrl *action;
+   std::unique_ptr< DilloUrl > action;
    Embed *embed;
    const char *attrbuf;
 
@@ -582,9 +582,9 @@ void Html_tag_open_isindex(DilloHtml *html, const char *tag, int tagsize)
    }
 
    if ((attrbuf = a_Html_get_attr(html, tag, tagsize, "action")))
-      action = a_Html_url_new(html, attrbuf, NULL, 0).release();
+      action = a_Html_url_new(html, attrbuf, NULL, 0);
    else
-      action = a_Url_dup(html->base_url).release();
+      action = a_Url_dup(html->base_url);
 
    html->formNew(DILLO_HTML_METHOD_GET, action, DILLO_HTML_ENC_URLENCODED,
                  html->charset.has_value() ? html->charset.value().c_str() : nullptr);
@@ -603,7 +603,6 @@ void Html_tag_open_isindex(DilloHtml *html, const char *tag, int tagsize)
 
    HT2TB(html)->addWidget (embed, html->backgroundStyle ());
 
-   delete action;
    html->InFlags &= ~IN_FORM;
 }