diff --git a/Corona-Warn-App/src/main/res/values-de/contact_diary_strings.xml b/Corona-Warn-App/src/main/res/values-de/contact_diary_strings.xml
index 72abf54c41ffaef59f4815031746ad4b7ac6217e..623060853d1f1d1bfc7f6ededf40bad77bbcbb59 100644
--- a/Corona-Warn-App/src/main/res/values-de/contact_diary_strings.xml
+++ b/Corona-Warn-App/src/main/res/values-de/contact_diary_strings.xml
@@ -151,9 +151,9 @@
     <string name="accessibility_day_add_location">"Ort hinzufügen"</string>
 
     <!-- XBUT: Option - person encounter - below 15 Min -->
-    <string name="contact_diary_person_encounter_duration_below_15_min">unter 15 Min</string>
+    <string name="contact_diary_person_encounter_duration_below_15_min">unter 15 Min.</string>
     <!-- XBUT: Option - person encounter - above 15 Min -->
-    <string name="contact_diary_person_encounter_duration_above_15_min">über 15 Min</string>
+    <string name="contact_diary_person_encounter_duration_above_15_min">über 15 Min.</string>
     <!-- XBUT: Option - person encounter - with mask -->
     <string name="contact_diary_person_encounter_mask_with">mit Maske</string>
     <!-- XBUT: Option - person encounter - without mask -->