diff --git a/bbmri/vars b/bbmri/vars
index 248fbee..1c08f8e 100644
--- a/bbmri/vars
+++ b/bbmri/vars
@@ -7,6 +7,7 @@
 FOCUS_RETRY_COUNT=${FOCUS_RETRY_COUNT:-64}
 PRIVATEKEYFILENAME=/etc/bridgehead/pki/${SITE_ID}.priv.pem
 
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/cce/vars b/cce/vars
index 7d0c1a3..a5c850a 100644
--- a/cce/vars
+++ b/cce/vars
@@ -7,6 +7,7 @@ SUPPORT_EMAIL=manoj.waikar@dkfz-heidelberg.de
 PRIVATEKEYFILENAME=/etc/bridgehead/pki/${SITE_ID}.priv.pem
 BROKER_URL_FOR_PREREQ=$BROKER_URL
 
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/ccp/vars b/ccp/vars
index c57f8c8..66e886d 100644
--- a/ccp/vars
+++ b/ccp/vars
@@ -18,6 +18,7 @@ OIDC_URL="https://login.verbis.dkfz.de"
 OIDC_ISSUER_URL="${OIDC_URL}/realms/${OIDC_REALM}"
 OIDC_GROUP_CLAIM="groups"
 
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/dhki/vars b/dhki/vars
index 6662468..21c62fc 100644
--- a/dhki/vars
+++ b/dhki/vars
@@ -8,6 +8,7 @@ PRIVATEKEYFILENAME=/etc/bridgehead/pki/${SITE_ID}.priv.pem
 
 BROKER_URL_FOR_PREREQ=$BROKER_URL
 
+source vars
 for module in ccp/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/itcc/vars b/itcc/vars
index b03403b..cec493f 100644
--- a/itcc/vars
+++ b/itcc/vars
@@ -7,6 +7,7 @@ SUPPORT_EMAIL=arturo.macias@dkfz-heidelberg.de
 PRIVATEKEYFILENAME=/etc/bridgehead/pki/${SITE_ID}.priv.pem
 BROKER_URL_FOR_PREREQ=$BROKER_URL
 
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/kr/vars b/kr/vars
index d4e5a27..bbba515 100644
--- a/kr/vars
+++ b/kr/vars
@@ -7,6 +7,7 @@ SUPPORT_EMAIL=arturo.macias@dkfz-heidelberg.de
 PRIVATEKEYFILENAME=/etc/bridgehead/pki/${SITE_ID}.priv.pem
 BROKER_URL_FOR_PREREQ=$BROKER_URL
 
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"
diff --git a/lib/prerequisites.sh b/lib/prerequisites.sh
index 2c1e186..b37aac4 100755
--- a/lib/prerequisites.sh
+++ b/lib/prerequisites.sh
@@ -67,7 +67,7 @@ fi
 log INFO "Checking network access ($BROKER_URL_FOR_PREREQ) ..."
 
 source "${CONFIG_DIR}${PROJECT}".conf
-source ${PROJECT}/vars
+source ${PROJECT}/vars vars
 
 if [ "${PROJECT}" != "minimal" ]; then
   set +e
diff --git a/minimal/vars b/minimal/vars
index 11d07ff..ee4701f 100644
--- a/minimal/vars
+++ b/minimal/vars
@@ -1,3 +1,5 @@
+
+source vars
 for module in $PROJECT/modules/*.sh
 do
     log DEBUG "sourcing $module"