diff --git a/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2004.sh b/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2004.sh
index 8175d1308c..c31f780339 100644
--- a/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2004.sh
+++ b/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2004.sh
@@ -11,7 +11,7 @@ apt-get -y install cron
 
 # install Java
 apt-get update -q
-apt-get install -y openjdk-11-jdk
+apt-get install -y openjdk-11-jre
 
 # install dependencies
 
diff --git a/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2204.sh b/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2204.sh
index 62541bbe01..4b4a060251 100644
--- a/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2204.sh
+++ b/omero/sysadmins/unix/walkthrough/walkthrough_ubuntu2204.sh
@@ -11,7 +11,7 @@ apt-get -y install cron
 
 # install Java
 apt-get update -q
-apt-get install -y openjdk-11-jdk
+apt-get install -y openjdk-11-jre
 
 # install dependencies