diff --git a/messages/uniworx/de-de-formal.msg b/messages/uniworx/de-de-formal.msg
index e2116f2b8..f11f69118 100644
--- a/messages/uniworx/de-de-formal.msg
+++ b/messages/uniworx/de-de-formal.msg
@@ -949,7 +949,8 @@ MailSheetSoonInactiveIntro courseName@Text termDesc@Text sheetName@SheetName: Ab
 MailSubjectSheetInactive csh@CourseShorthand sheetName@SheetName: Abgabezeitraum für #{sheetName} in #{csh} abgelaufen
 MailSheetInactiveIntro courseName@Text termDesc@Text sheetName@SheetName n@Int num@Int64: Die Abgabefrist für #{sheetName} im Kurs #{courseName} (#{termDesc}) ist beendet. Es gab #{noneOneMoreDE n "Keine Abgaben" "Nur eine Abgabe von " (toMessage n <> " Abgaben von ")}#{noneOneMoreDE num "" "einem Teilnehmer" (toMessage num <> " Teilnehmern")}.
 MailSheetInactiveIntroNoUserSubmission courseName@Text termDesc@Text sheetName@SheetName n@Int num@Int64: Die Abgabefrist für #{sheetName} im Kurs #{courseName} (#{termDesc}) ist beendet.#{noneOneMoreDE n "" "Es gab bereits eine Abgabe von " (("Es gab bereits " <> toMessage n) <> " Abgaben von ")}#{noneOneMoreDE num "" "einem Teilnehmer" (toMessage num <> " Teilnehmern")}.
-MailSheetInactivePseudonymsCount num@Int64: Die Anzahl von Abgaben betrifft nur jene, die bereits direkt in Uni2work abgegeben haben. Es #{pluralDE num (("wurde " <> tshow num) <> " Pseudonym") (("wurden " <> tshow num) <> " Pseudonyme")} generiert.
+MailSheetInactivePseudonymsCount n@Int: Die Anzahl von Abgaben betrifft nur jene, die bereits direkt in Uni2work abgegeben haben. Es #{pluralDE n (("wurde " <> tshow n) <> " Pseudonym") (("wurden " <> tshow n) <> " Pseudonyme")} generiert.
+MailSheetInactiveParticipantsCount n@Int: Es #{pluralDE n "ist aktuell" "sind aktuell"} #{n} Teilnehmer zum Kurs angemeldet.
 
 MailSubjectCorrectionsAssigned csh@CourseShorthand sheetName@SheetName: Ihnen wurden Korrekturen zu #{sheetName} in #{csh} zugeteilt
 MailCorrectionsAssignedIntro courseName@Text termDesc@Text sheetName@SheetName n@Int: #{n} #{pluralDE n "Abgabe wurde" "Abgaben wurden"} Ihnen zur Korrektur für #{sheetName} im Kurs #{courseName} (#{termDesc}) zugeteilt.
diff --git a/messages/uniworx/en-eu.msg b/messages/uniworx/en-eu.msg
index bddb0430d..42eaaae4c 100644
--- a/messages/uniworx/en-eu.msg
+++ b/messages/uniworx/en-eu.msg
@@ -949,7 +949,8 @@ MailSheetSoonInactiveIntro courseName termDesc sheetName: Soon you will no longe
 MailSubjectSheetInactive csh sheetName: The submission period for #{sheetName} of #{csh} has ended
 MailSheetInactiveIntro courseName termDesc sheetName n num: The submission period for #{sheetName} of the course #{courseName} (#{termDesc}) has ended. #{noneOneMoreEN num "" "One participant" (toMessage num <> " participants")}#{noneOneMoreEN n "" "" (" made " <> toMessage num)}#{noneOneMoreEN n "There were no submissions" " made one submission" " submissions"}.
 MailSheetInactiveIntroNoUserSubmission courseName termDesc sheetName n num: The submission period for #{sheetName} of the course #{courseName} (#{termDesc}) has ended. #{noneOneMoreEN num "" "One participant already" (toMessage num <> " participants already")}#{noneOneMoreEN n "" "" (" made " <> toMessage num)}#{noneOneMoreEN n "" " made one submission" " submissions"}.
-MailSheetInactivePseudonymsCount num: The number of submissions above accounts only for the submissions already made directly in Uni2work. #{num} #{pluralEN num "pseudonym was" "pseudonyms were"} generated.
+MailSheetInactivePseudonymsCount n: The number of submissions above accounts only for the submissions already made directly in Uni2work. #{n} #{pluralEN n "pseudonym was" "pseudonyms were"} generated.
+MailSheetInactiveParticipantsCount n: There #{pluralEN n "is" "are"} currently #{n} #{pluralEN n "participant" "participants"} registered for the course.
 
 MailSubjectCorrectionsAssigned csh sheetName: You were assigned corrections for #{sheetName} of #{csh}
 MailCorrectionsAssignedIntro courseName termDesc sheetName n: You were assigned #{n} #{pluralEN n "correction" "corrections"} for #{sheetName} of #{courseName} (#{termDesc}).
diff --git a/src/Jobs/Handler/SendNotification/SheetInactive.hs b/src/Jobs/Handler/SendNotification/SheetInactive.hs
index 6ea533168..0dd325bb2 100644
--- a/src/Jobs/Handler/SendNotification/SheetInactive.hs
+++ b/src/Jobs/Handler/SendNotification/SheetInactive.hs
@@ -47,7 +47,7 @@ dispatchNotificationSheetInactive nSheet jRecipient = userMailT jRecipient $ do
         -- E.distinctOn [E.don (subUser E.^. SubmissionUserUser)] -- Not necessary due to UniqueSubmisionUser
         return (E.countRows :: E.SqlExpr (E.Value Int64))
     nrPseudonyms <- count [SheetPseudonymSheet ==. nSheet]
-    nrParticipants <- count [CourseParticipantCourse ==. sheetCourse, CourseParticipantState ==. CourseParticipantActive]
+    nrParticipants <- count [CourseParticipantCourse ==. sheetCourse sheet, CourseParticipantState ==. CourseParticipantActive]
     return (course, sheet, nrSubs, nrSubmitters, nrPseudonyms, nrParticipants)
   replaceMailHeader "Auto-Submitted" $ Just "auto-generated"
   setSubjectI $ MsgMailSubjectSheetInactive courseShorthand sheetName