diff --git a/bookwyrm/models/fields.py b/bookwyrm/models/fields.py
index a5985e8d..e034d59e 100644
--- a/bookwyrm/models/fields.py
+++ b/bookwyrm/models/fields.py
@@ -450,4 +450,6 @@ class DecimalField(ActivitypubFieldMixin, models.DecimalField):
     """ activitypub-aware boolean field """
 
     def field_to_activity(self, value):
+        if not value:
+            return None
         return float(value)
diff --git a/bookwyrm/models/status.py b/bookwyrm/models/status.py
index e655616f..adc9d39d 100644
--- a/bookwyrm/models/status.py
+++ b/bookwyrm/models/status.py
@@ -306,7 +306,7 @@ class Review(Status):
         """ clarify review names for mastodon serialization """
         template = get_template("snippets/generated_status/review_pure_name.html")
         return template.render(
-            {"book": self.book, "rating": int(self.rating), "name": self.name}
+            {"book": self.book, "rating": self.rating, "name": self.name}
         ).strip()
 
     @property
@@ -329,7 +329,7 @@ class ReviewRating(Review):
     @property
     def pure_content(self):
         template = get_template("snippets/generated_status/rating.html")
-        return template.render({"book": self.book, "rating": int(self.rating)}).strip()
+        return template.render({"book": self.book, "rating": self.rating}).strip()
 
     activity_serializer = activitypub.Rating
     pure_type = "Note"
diff --git a/bookwyrm/templates/snippets/generated_status/rating.html b/bookwyrm/templates/snippets/generated_status/rating.html
index 13afd94d..c23d0eb8 100644
--- a/bookwyrm/templates/snippets/generated_status/rating.html
+++ b/bookwyrm/templates/snippets/generated_status/rating.html
@@ -1,3 +1,3 @@
 {% load i18n %}{% load humanize %}
 
-{% blocktrans with title=book.title path=book.remote_id rating=rating count counter=rating %}Rated <em><a href="{{ path }}">{{ title }}</a></em>: {{ rating }} star{% plural %}Rated <em><a href="{{ path }}">{{ title }}</a></em>: {{ rating }} stars{% endblocktrans %}
+{% blocktrans with title=book.title path=book.remote_id rating=rating|floatformat:"0" count counter=rating %}Rated <em><a href="{{ path }}">{{ title }}</a></em>: {{ rating }} star{% plural %}Rated <em><a href="{{ path }}">{{ title }}</a></em>: {{ rating }} stars{% endblocktrans %}
diff --git a/bookwyrm/templates/snippets/generated_status/review_pure_name.html b/bookwyrm/templates/snippets/generated_status/review_pure_name.html
index 3c133678..f5864384 100644
--- a/bookwyrm/templates/snippets/generated_status/review_pure_name.html
+++ b/bookwyrm/templates/snippets/generated_status/review_pure_name.html
@@ -1,7 +1,7 @@
 {% load i18n %}
 {% if rating %}
 
-{% blocktrans with book_title=book.title rating=rating review_title=name count counter=rating %}Review of <em>{{ book_title }}</em> ({{ rating }} star): {{ review_title }}{% plural %}Review of <em>{{ book_title }}</em> ({{ rating }} stars): {{ review_title }}{% endblocktrans %}
+{% blocktrans with book_title=book.title rating=rating|floatformat:"0" review_title=name count counter=rating %}Review of <em>{{ book_title }}</em> ({{ rating }} star): {{ review_title }}{% plural %}Review of <em>{{ book_title }}</em> ({{ rating }} stars): {{ review_title }}{% endblocktrans %}
 
 {% else %}