diff --git a/src/form.cc b/src/form.cc
index 28e1cad..a97819c 100644
--- a/src/form.cc
+++ b/src/form.cc
@@ -890,7 +890,7 @@ void Html_tag_open_option(DilloHtml *html, const char *tag, int tagsize)
       bool enabled = (a_Html_get_attr(html, tag, tagsize, "disabled") == NULL);
 
       DilloHtmlOption *option =
-         new DilloHtmlOption (dStrdup( value.value().c_str() ), dStrdup( label.value().c_str() ), selected, enabled);
+         new DilloHtmlOption (value ? dStrdup( value.value().c_str() ) : nullptr, label ? dStrdup( label.value().c_str() ) : nullptr, selected, enabled);
 
       input->select->addOpt(option);
    }