diff --git a/src/form.cc b/src/form.cc
index f7ee359..28e1cad 100644
--- a/src/form.cc
+++ b/src/form.cc
@@ -475,7 +475,7 @@ void Html_tag_open_input(DilloHtml *html, const char *tag, int tagsize)
       placeholder = a_Html_get_attr_wdef(html, tag,tagsize,"placeholder",NULL);
       attrbuf = a_Html_get_attr(html, tag, tagsize, "size");
       int size = Html_input_get_size(html, attrbuf);
-      resource = factory->createEntryResource (size, true, NULL, placeholder.value().c_str());
+      resource = factory->createEntryResource (size, true, NULL, placeholder ? placeholder.value().c_str() : nullptr);
       init_str = value;
    } else if (!dStrAsciiCasecmp(type.value().c_str(), "checkbox")) {
       inp_type = DILLO_HTML_INPUT_CHECKBOX;
@@ -551,7 +551,7 @@ void Html_tag_open_input(DilloHtml *html, const char *tag, int tagsize)
       placeholder = a_Html_get_attr_wdef(html, tag,tagsize,"placeholder",NULL);
       attrbuf = a_Html_get_attr(html, tag, tagsize, "size");
       int size = Html_input_get_size(html, attrbuf);
-      resource = factory->createEntryResource(size, false, NULL, placeholder.value().c_str());
+      resource = factory->createEntryResource(size, false, NULL, placeholder ? placeholder.value().c_str() : nullptr);
       init_str = value;
    }
    if (resource)