diff --git a/app/src/main/java/info/nightscout/androidaps/utils/ActivityMonitor.kt b/app/src/main/java/info/nightscout/androidaps/utils/ActivityMonitor.kt
index 31a9f0dc23..7364bef9a5 100644
--- a/app/src/main/java/info/nightscout/androidaps/utils/ActivityMonitor.kt
+++ b/app/src/main/java/info/nightscout/androidaps/utils/ActivityMonitor.kt
@@ -66,7 +66,7 @@ class ActivityMonitor @Inject constructor(
                 val duration = DateUtil.niceTimeScalar(v as Long, resourceHelper)
                 val start = sp.getLong(key.replace("total", "start"), 0)
                 val days = T.msecs(DateUtil.now() - start).days()
-                result += "<b><span style=\"color:yellow\">$activity:</span></b> <b>$duration</b> in <b>$days</b> days<br>"
+                result += resourceHelper.gs(R.string.activitymonitorformat, activity, duration, days)
             }
         return result
     }
diff --git a/core/src/main/res/values/strings.xml b/core/src/main/res/values/strings.xml
index ecd92d70ca..9dffe1f936 100644
--- a/core/src/main/res/values/strings.xml
+++ b/core/src/main/res/values/strings.xml
@@ -236,6 +236,7 @@
     <!--    TDD-->
     <string name="tddformat"><![CDATA[<b>%1$s:</b> ∑: <b>%2$.2f U</b> Bol: <b>%3$.2f U</b> Bas: <b>%4$.2f U(%5$.0f%%)</b>]]></string>
     <string name="tddwithcarbsformat"><![CDATA[<b>%1$s:</b> ∑: <b>%2$.2f U</b> Bol: <b>%3$.2f U</b> Bas: <b>%4$.2f U(%5$.0f%%)</b> Carbs: <b>%6$.0f g</b>]]></string>
+    <string name="activitymonitorformat"><![CDATA[<b><span style=\"color:yellow\">%1$s:</span></b> <b>%2$s</b> in <b>%3$d</b> days<br>]]></string>
 
     <!--    Translator-->
     <string name="careportal_bgcheck">BG Check</string>