diff --git a/netbox/ipam/tables.py b/netbox/ipam/tables.py
index 77330044d..8d05bae5b 100644
--- a/netbox/ipam/tables.py
+++ b/netbox/ipam/tables.py
@@ -28,7 +28,7 @@ RIR_UTILIZATION = """
 
 UTILIZATION_GRAPH = """
 {% load helpers %}
-{% if record.pk %}{% utilization_graph record.get_utilization[0], record.get_utilization[1] %}{% else %}—{% endif %}
+{% if record.pk %}{% utilization_graph record.get_utilization.0 record.get_utilization.1 %}{% else %}—{% endif %}
 """
 
 ROLE_PREFIX_COUNT = """
diff --git a/netbox/templates/dcim/rack.html b/netbox/templates/dcim/rack.html
index 511e27784..d04dbbb68 100644
--- a/netbox/templates/dcim/rack.html
+++ b/netbox/templates/dcim/rack.html
@@ -152,7 +152,7 @@
                 </tr>
                     <tr>
                         <td>Utilization</td>
-                        <td>{% utilization_graph rack.get_utilization[0] rack.get_utilization[1] %}</td>
+                        <td>{% utilization_graph rack.get_utilization.0 rack.get_utilization.1 %}</td>
                     </tr>
             </table>
         </div>
diff --git a/netbox/templates/ipam/prefix.html b/netbox/templates/ipam/prefix.html
index aa8242a89..03272cf56 100644
--- a/netbox/templates/ipam/prefix.html
+++ b/netbox/templates/ipam/prefix.html
@@ -183,7 +183,7 @@
                     </tr>
                     <tr>
                         <td>Utilization</td>
-                        <td>{% utilization_graph prefix.get_utilization[0] prefix.get_utilization[1] %}</td>
+                        <td>{% utilization_graph prefix.get_utilization.0 prefix.get_utilization.1 %}</td>
                     </tr>
                 </table>
             </div>