diff --git a/images/linux/scripts/installers/cleanup.sh b/images/linux/scripts/installers/cleanup.sh
index fe284f339..954e51fc9 100644
--- a/images/linux/scripts/installers/cleanup.sh
+++ b/images/linux/scripts/installers/cleanup.sh
@@ -6,6 +6,7 @@ before=$(df / -Pm | awk 'NR==2{print $4}')
 # clears out the local repository of retrieved package files
 # It removes everything but the lock file from /var/cache/apt/archives/ and /var/cache/apt/archives/partial
 apt-get clean
+rm -rf /tmp/*
 
 # after cleanup
 after=$(df / -Pm | awk 'NR==2{print $4}')
diff --git a/images/linux/scripts/installers/validate-disk-space.sh b/images/linux/scripts/installers/validate-disk-space.sh
index 5201848d7..79a589ddc 100644
--- a/images/linux/scripts/installers/validate-disk-space.sh
+++ b/images/linux/scripts/installers/validate-disk-space.sh
@@ -5,7 +5,7 @@
 ################################################################################
 
 availableSpaceMB=$(df / -hm | sed 1d | awk '{ print $4}')
-minimumFreeSpaceMB=18000
+minimumFreeSpaceMB=17800
 
 echo "Available disk space: $availableSpaceMB MB"
 if [ $availableSpaceMB -le $minimumFreeSpaceMB ]; then