diff --git a/application/models/ressource/Reservierung_model.php b/application/models/ressource/Reservierung_model.php
index e1c96925c..0aa74fb7e 100644
--- a/application/models/ressource/Reservierung_model.php
+++ b/application/models/ressource/Reservierung_model.php
@@ -24,7 +24,7 @@ class Reservierung_model extends DB_Model
 		$lvplan_reservierungen_query = "SELECT r.* , stund.beginn, stund.ende,
 			CASE
 				WHEN r.gruppe_kurzbz IS NOT NULL THEN r.gruppe_kurzbz 
-				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(r.semester AS varchar),'/'),COALESCE(CAST(r.verband AS varchar),'/')) 
+				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(r.semester AS varchar),'/'),COALESCE(CAST(r.verband AS varchar),'/'),COALESCE(CAST(res.gruppe AS varchar),'/')) 
 			END as gruppen_kuerzel
 			FROM campus.vw_reservierung r
 			JOIN public.tbl_studiengang studg ON studg.studiengang_kz=r.studiengang_kz
@@ -39,7 +39,7 @@ class Reservierung_model extends DB_Model
 		$raum_reservierungen_query = "SELECT res.*, beginn, ende,
 			CASE
 				WHEN res.gruppe_kurzbz IS NOT NULL THEN res.gruppe_kurzbz 
-				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(res.semester AS varchar),'/'),COALESCE(CAST(res.verband AS varchar),'/')) 
+				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(res.semester AS varchar),'/'),COALESCE(CAST(res.verband AS varchar),'/'),COALESCE(CAST(res.gruppe AS varchar),'/')) 
 			END as gruppen_kuerzel
 			FROM campus.vw_reservierung res
 			JOIN public.tbl_studiengang studg ON studg.studiengang_kz=res.studiengang_kz
@@ -83,7 +83,7 @@ class Reservierung_model extends DB_Model
 		$raum_reservierungen_query = "SELECT res.*, beginn, ende,
 			CASE
 				WHEN res.gruppe_kurzbz IS NOT NULL THEN res.gruppe_kurzbz 
-				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(res.semester AS varchar),'/'),COALESCE(CAST(res.verband AS varchar),'/')) 
+				ELSE CONCAT(UPPER(studg.typ),UPPER(studg.kurzbz),'-',COALESCE(CAST(res.semester AS varchar),'/'),COALESCE(CAST(res.verband AS varchar),'/'),COALESCE(CAST(res.gruppe AS varchar),'/')) 
 			END as gruppen_kuerzel
 			FROM campus.vw_reservierung res
 			JOIN public.tbl_studiengang studg ON studg.studiengang_kz=res.studiengang_kz
diff --git a/public/js/components/Cis/Renderer/Reservierungen/calendarEvent.js b/public/js/components/Cis/Renderer/Reservierungen/calendarEvent.js
index 91c49d5e0..edae78671 100644
--- a/public/js/components/Cis/Renderer/Reservierungen/calendarEvent.js
+++ b/public/js/components/Cis/Renderer/Reservierungen/calendarEvent.js
@@ -32,6 +32,11 @@ export default {
 				this.$p.t('person/ort'),
 				this.event.ort_kurzbz
 			].join(": "));
+
+			tooltipArray.push([
+				this.$p.t('lehre/gruppe'),
+				this.event.gruppe[0].kuerzel
+			].join(": "));
 			
 			if (Array.isArray(this.event.lektor) && this.event.lektor.length > 0) {
 				if (this.event.lektor.length > 3) {
@@ -103,6 +108,7 @@ export default {
 		
 			<span class="event-topic">{{ event.topic }}</span>
 			<span class="event-place">{{ event.ort_kurzbz }}</span>
+			<span>{{ event.gruppe[0].kuerzel }}</span>
 			<span
 				v-for="lektor in event.lektor.slice(0, 3)"
 				class="event-lectors"
diff --git a/public/js/components/Cis/Renderer/Reservierungen/modalContent.js b/public/js/components/Cis/Renderer/Reservierungen/modalContent.js
index 0d6c62672..da4fedbc0 100644
--- a/public/js/components/Cis/Renderer/Reservierungen/modalContent.js
+++ b/public/js/components/Cis/Renderer/Reservierungen/modalContent.js
@@ -90,6 +90,14 @@ export default {
 							{{event.ort_kurzbz}}
 						</td>
 					</tr>
+					<tr>
+						<th>{{
+							$p.t('lehre','gruppe')?
+							$p.t('lehre','gruppe')+':'
+							:''
+						}}</th>
+						<td>{{event.gruppe[0].kuerzel}}</td>
+					</tr>
 					<tr>
 						<th>{{
 							$p.t('lehre','lektor')?