diff --git a/cara/apps/templates/base/calculator.report.html.j2 b/cara/apps/templates/base/calculator.report.html.j2
index 0e43d1cc..ae5834a5 100644
--- a/cara/apps/templates/base/calculator.report.html.j2
+++ b/cara/apps/templates/base/calculator.report.html.j2
@@ -321,7 +321,7 @@
 							{% for interaction in form.short_range_interactions %}
 								<li>Expiratory activity {{ loop.index if form.short_range_interactions|length > 1 }}: {{ interaction.activity }} </li>
 								<li>Start time {{ loop.index if form.short_range_interactions|length > 1 }}: {{ interaction.start_time }} </li>
-								<li>Duration {{ loop.index if form.short_range_interactions|length > 1 }}: {{ interaction.duration }} {{ "minutes" if interaction.duration|int > 1 else "minute" }}</li>
+								<li>Duration {{ loop.index if form.short_range_interactions|length > 1 }}: {{ interaction.duration }} {{ "minutes" if interaction.duration|float > 1. else "minute" }}</li>
 							{% endfor %}
 							</ul>
 							{% endif %}