diff --git a/news/1583.bugfix b/news/1583.bugfix
new file mode 100644
index 000000000..9b021032b
--- /dev/null
+++ b/news/1583.bugfix
@@ -0,0 +1,2 @@
+Provide a JsonCompatible adapter for RichTextValue objects
+[erral]
\ No newline at end of file
diff --git a/src/plone/restapi/serializer/configure.zcml b/src/plone/restapi/serializer/configure.zcml
index 32c63b2d7..2f740822e 100644
--- a/src/plone/restapi/serializer/configure.zcml
+++ b/src/plone/restapi/serializer/configure.zcml
@@ -85,6 +85,7 @@
   <adapter factory=".converters.persistent_list_converter" />
   <adapter factory=".converters.persistent_mapping_converter" />
   <adapter factory=".converters.python_datetime_converter" />
+  <adapter factory=".converters.richtextvalue_converter" />
   <adapter factory=".converters.RichtextDXContextConverter" />
   <adapter factory=".converters.set_converter" />
   <adapter factory=".converters.bytes_converter" />
diff --git a/src/plone/restapi/serializer/converters.py b/src/plone/restapi/serializer/converters.py
index 6da75b754..7e6f424c8 100644
--- a/src/plone/restapi/serializer/converters.py
+++ b/src/plone/restapi/serializer/converters.py
@@ -78,8 +78,7 @@ def default_converter(value):
         return value
 
     raise TypeError(
-        "No converter for making"
-        " {!r} ({}) JSON compatible.".format(value, type(value))
+        "No converter for making {!r} ({}) JSON compatible.".format(value, type(value))
     )
 
 
@@ -173,6 +172,12 @@ def timedelta_converter(value):
     return json_compatible(value.total_seconds())
 
 
+@adapter(IRichTextValue)
+@implementer(IJsonCompatible)
+def richtextvalue_converter(value):
+    return json_compatible(value.output)
+
+
 @adapter(IRichTextValue, IDexterityContent)
 @implementer(IContextawareJsonCompatible)
 class RichtextDXContextConverter:
diff --git a/src/plone/restapi/tests/test_converters.py b/src/plone/restapi/tests/test_converters.py
new file mode 100644
index 000000000..262dc232d
--- /dev/null
+++ b/src/plone/restapi/tests/test_converters.py
@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+
+import unittest
+from plone.app.textfield import RichTextValue
+from plone.restapi.interfaces import IJsonCompatible
+from plone.restapi.testing import PLONE_RESTAPI_DX_INTEGRATION_TESTING
+
+
+class TestConverters(unittest.TestCase):
+
+    layer = PLONE_RESTAPI_DX_INTEGRATION_TESTING
+
+    def test_richtextvalue_converter(self):
+        """test that a RichTextValue is converted to a proper HTML"""
+        html = "<p>This is a demo HTML</p>"
+        value = RichTextValue(html, "text/html", "text/html")
+        json_compatible_value = IJsonCompatible(value)
+        self.assertEqual(json_compatible_value, html)
diff --git a/src/plone/restapi/tests/test_types.py b/src/plone/restapi/tests/test_types.py
index a19186ca0..5dbb222fb 100644
--- a/src/plone/restapi/tests/test_types.py
+++ b/src/plone/restapi/tests/test_types.py
@@ -46,7 +46,9 @@ class ITaggedValuesSchema(model.Schema):
 
     parametrized_widget_field = schema.TextLine(title="Parametrized widget field")
     form.widget(
-        "parametrized_widget_field", a_param="some_value", defaultFactory=lambda: "Foo"
+        "parametrized_widget_field",
+        a_param="some_value",
+        defaultFactory=lambda: "Foo",
     )
 
     not_parametrized_widget_field = schema.TextLine(
@@ -459,7 +461,11 @@ def test_decimal(self):
 
     def test_int(self):
         field = schema.Int(
-            title="My field", description="My great field", min=0, max=100, default=50
+            title="My field",
+            description="My great field",
+            min=0,
+            max=100,
+            default=50,
         )
         adapter = getMultiAdapter(
             (field, self.portal, self.request), IJsonSchemaProvider
@@ -742,9 +748,33 @@ def test_richtext(self):
             adapter.get_schema(),
         )
 
+    def test_richtext_with_default(self):
+        field = RichText(
+            title="My field",
+            description="My great field",
+            default="<p>Some default value</p>",
+        )
+        adapter = getMultiAdapter(
+            (field, self.portal, self.request), IJsonSchemaProvider
+        )
+
+        self.assertEqual(
+            {
+                "type": "string",
+                "title": "My field",
+                "factory": "Rich Text",
+                "description": "My great field",
+                "widget": "richtext",
+                "default": "<p>Some default value</p>",
+            },
+            adapter.get_schema(),
+        )
+
     def test_date(self):
         field = schema.Date(
-            title="My field", description="My great field", default=date(2016, 1, 1)
+            title="My field",
+            description="My great field",
+            default=date(2016, 1, 1),
         )
         adapter = getMultiAdapter(
             (field, self.portal, self.request), IJsonSchemaProvider
@@ -781,7 +811,9 @@ def test_datetime(self):
 
     def test_jsonfield(self):
         field = JSONField(
-            title="My field", description="My great field", widget="my_widget_name"
+            title="My field",
+            description="My great field",
+            widget="my_widget_name",
         )
         adapter = getMultiAdapter(
             (field, self.portal, self.request), IJsonSchemaProvider