diff --git a/etc/network.subr b/etc/network.subr
index 5ddce8051816..ad6633779677 100644
--- a/etc/network.subr
+++ b/etc/network.subr
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.d/netoptions b/etc/rc.d/netoptions
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.d/netoptions
+++ b/etc/rc.d/netoptions
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.d/network1 b/etc/rc.d/network1
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.d/network1
+++ b/etc/rc.d/network1
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.d/network2 b/etc/rc.d/network2
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.d/network2
+++ b/etc/rc.d/network2
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.d/network3 b/etc/rc.d/network3
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.d/network3
+++ b/etc/rc.d/network3
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.d/routing b/etc/rc.d/routing
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.d/routing
+++ b/etc/rc.d/routing
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon
diff --git a/etc/rc.network b/etc/rc.network
index 5ddce8051816..ad6633779677 100644
--- a/etc/rc.network
+++ b/etc/rc.network
@@ -187,8 +187,8 @@ network_pass1() {
 
 		case ${firewall_enable} in
 		[Yy][Ee][Ss])
-			if [ -r ${firewall_script} ]; then
-				. ${firewall_script}
+			if [ -r "${firewall_script}" ]; then
+				. "${firewall_script}"
 				echo -n 'Firewall rules loaded, starting divert daemons:'
 
 				# Network Address Translation daemon