diff --git a/cps/jinjia.py b/cps/jinjia.py
index 28c2621a..b01ad69f 100644
--- a/cps/jinjia.py
+++ b/cps/jinjia.py
@@ -111,3 +111,10 @@ def timestamptodate(date, fmt=None):
 @jinjia.app_template_filter('yesno')
 def yesno(value, yes, no):
     return yes if value else no
+
+@jinjia.app_template_filter('formatseriesindex')
+def formatseriesindex_filter(series_index):
+    if int(series_index) - series_index == 0:
+        return int(series_index)
+    else:
+        return series_index
\ No newline at end of file
diff --git a/cps/templates/author.html b/cps/templates/author.html
index cce173b0..5148dfef 100644
--- a/cps/templates/author.html
+++ b/cps/templates/author.html
@@ -75,7 +75,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         {% if entry.ratings.__len__() > 0 %}
@@ -127,7 +127,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         <div class="rating">
diff --git a/cps/templates/detail.html b/cps/templates/detail.html
index 24ba10c7..d348b7f6 100644
--- a/cps/templates/detail.html
+++ b/cps/templates/detail.html
@@ -114,7 +114,7 @@
       {% endif %}
 
       {% if entry.series|length > 0 %}
-        <p>{{_('Book')}} {{entry.series_index}} {{_('of')}} <a href="{{url_for('web.books_list', data='series',sort='abc', book_id=entry.series[0].id)}}">{{entry.series[0].name}}</a></p>
+        <p>{{_('Book')}} {{entry.series_index|formatseriesindex}} {{_('of')}} <a href="{{url_for('web.books_list', data='series',sort='abc', book_id=entry.series[0].id)}}">{{entry.series[0].name}}</a></p>
       {% endif %}
 
       {% if entry.languages.__len__() > 0 %}
diff --git a/cps/templates/discover.html b/cps/templates/discover.html
index dd8dc9bb..dac0afb7 100644
--- a/cps/templates/discover.html
+++ b/cps/templates/discover.html
@@ -39,7 +39,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         {% if entry.ratings.__len__() > 0 %}
diff --git a/cps/templates/index.html b/cps/templates/index.html
index f39a7181..1fed6be2 100644
--- a/cps/templates/index.html
+++ b/cps/templates/index.html
@@ -38,7 +38,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         {% if entry.ratings.__len__() > 0 %}
@@ -114,7 +114,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         {% if entry.ratings.__len__() > 0 %}
diff --git a/cps/templates/search.html b/cps/templates/search.html
index 7e546c8e..213bed84 100644
--- a/cps/templates/search.html
+++ b/cps/templates/search.html
@@ -81,7 +81,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
 
diff --git a/cps/templates/shelf.html b/cps/templates/shelf.html
index cf44cccf..6551bef6 100644
--- a/cps/templates/shelf.html
+++ b/cps/templates/shelf.html
@@ -48,7 +48,7 @@
           <a href="{{url_for('web.books_list', data='series', sort='new', book_id=entry.series[0].id )}}">
             {{entry.series[0].name}}
           </a> 
-          ({{entry.series_index|int}})
+          ({{entry.series_index|formatseriesindex}})
         </p>
         {% endif %}
         {% if entry.ratings.__len__() > 0 %}