diff --git a/mobile/app/org.kde.okular.kirigami.appdata.xml b/mobile/app/org.kde.okular.kirigami.appdata.xml
index f79272e57..7956411cb 100644
--- a/mobile/app/org.kde.okular.kirigami.appdata.xml
+++ b/mobile/app/org.kde.okular.kirigami.appdata.xml
@@ -157,6 +157,7 @@
   </description>
   <screenshots>
     <screenshot type="default">
+      <caption>Reading manual in Okular</caption>
       <image>https://www.kde.org/images/screenshots/okular.png</image>
     </screenshot>
   </screenshots>
diff --git a/shell/org.kde.okular.appdata.xml b/shell/org.kde.okular.appdata.xml
index 12c9ac3c6..5aef44a47 100644
--- a/shell/org.kde.okular.appdata.xml
+++ b/shell/org.kde.okular.appdata.xml
@@ -241,6 +241,7 @@
   </description>
   <screenshots>
     <screenshot type="default">
+      <caption>Reading manual in Okular</caption>
       <image>https://www.kde.org/images/screenshots/okular.png</image>
     </screenshot>
   </screenshots>