diff --git a/install-koji-farm.sh b/install-koji-farm.sh
index 099dd68..dfa8a75 100644
--- a/install-koji-farm.sh
+++ b/install-koji-farm.sh
@@ -31,10 +31,10 @@ curl $SILENT $SCRIPT_GIT/koji-bootstrap-build.sh > $SCRIPT_DIR/koji-bootstrap-bu
 chmod o+x $SCRIPT_DIR/*.sh
 
 # install any required packages
-if [ ! "dnf list installed | grep epel-release" ] ; then
+if [ -z $(dnf list installed | grep epel-release) ] ; then
     dnf install -y epel-release $QUIET
 fi
-if [ ! "dnf list installed | grep netcat" ] ; then
+if [ -z $(dnf list installed | grep netcat) ] ; then
     dnf install -y netcat $QUIET
 fi
 
diff --git a/koji-setup/add-koji-builder.sh b/koji-setup/add-koji-builder.sh
index f1de3bc..8494547 100644
--- a/koji-setup/add-koji-builder.sh
+++ b/koji-setup/add-koji-builder.sh
@@ -38,10 +38,10 @@ curl $SILENT $SCRIPT_GIT/koji-deploy-hub.sh > $SCRIPT_DIR/koji-deploy-hub.sh
 if [ ! -d $SCRIPT_DIR ] ; then mkdir -p $SCRIPT_DIR ; fi
 
 # install any required packages
-if [ ! "dnf list installed | grep epel-release" ] ; then
+if [ -z $(dnf list installed | grep epel-release) ] ; then
     dnf install -y epel-release $QUIET
 fi
-if [ ! "dnf list installed | grep netcat" ] ; then
+if [ -z $(dnf list installed | grep netcat) ] ; then
     dnf install -y netcat $QUIET
 fi
 
diff --git a/koji-setup/koji-deploy-builder.sh b/koji-setup/koji-deploy-builder.sh
index 32e082f..c9e5ac1 100755
--- a/koji-setup/koji-deploy-builder.sh
+++ b/koji-setup/koji-deploy-builder.sh
@@ -33,10 +33,10 @@ source "$SCRIPT_DIR"/koji-parameters.sh
 KOJI_BUILD_FQDN="$(hostname -f)"
 
 # Install the koji builder componelts from epel
-if [ ! "dnf list installed | grep epel-release" ] ; then
+if [ -z $(dnf list installed | grep epel-release) ] ; then
 	dnf install -y epel-release $QUIET
 fi
-if [ ! "dnf list installed | grep koji-builder" ] ; then
+if [ -z $(dnf list installed | grep koji-builder) ] ; then
 	dnf install -y koji-builder
 fi
 
diff --git a/koji-setup/koji-deploy-nfs-client.sh b/koji-setup/koji-deploy-nfs-client.sh
index 450d291..9666127 100755
--- a/koji-setup/koji-deploy-nfs-client.sh
+++ b/koji-setup/koji-deploy-nfs-client.sh
@@ -10,8 +10,6 @@ for param in $1 $2 ; do
     case $param in
 	    debug )
 		    DEBUG="debug" ;;
-        * )
-            KOJI_BUILD_FQDN=$param ;;
     esac
   else
 	  break
@@ -19,7 +17,7 @@ for param in $1 $2 ; do
 done
 
 if [ $DEBUG ] ; then
-    set -x
+    set -xe
     SILENT=
     QUIET="-v"
 fi
diff --git a/koji-setup/koji-deploy-nfs-server.sh b/koji-setup/koji-deploy-nfs-server.sh
index 2755c41..5789125 100755
--- a/koji-setup/koji-deploy-nfs-server.sh
+++ b/koji-setup/koji-deploy-nfs-server.sh
@@ -17,7 +17,7 @@ for param in $1 $2 ; do
 done
 
 if [ $DEBUG ] ; then
-    set -x
+    set -xe
     SILENT=
     QUIET="-v"
 fi