diff --git a/src/main/resources/config/application-dev-gui.properties b/src/main/resources/config/application-dev-gui.properties
index a22c98bc..8069b264 100644
--- a/src/main/resources/config/application-dev-gui.properties
+++ b/src/main/resources/config/application-dev-gui.properties
@@ -1,11 +1,11 @@
 server.address=localhost
-server.port=8090
+server.port=8080
 
 sebserver.gui.http.external.scheme=http
 sebserver.gui.entrypoint=/gui
 sebserver.gui.webservice.protocol=http
 sebserver.gui.webservice.address=localhost
-sebserver.gui.webservice.port=8090
+sebserver.gui.webservice.port=8080
 sebserver.gui.webservice.apipath=/admin-api/v1
 # defines the polling interval that is used to poll the webservice for client connection data on a monitored exam page
 sebserver.gui.webservice.poll-interval=1000