diff --git a/extras/vpnupgrade.sh b/extras/vpnupgrade.sh
index e675fbc..e681812 100755
--- a/extras/vpnupgrade.sh
+++ b/extras/vpnupgrade.sh
@@ -200,7 +200,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 cd "libreswan-$SWAN_VER" || exit 1
 [ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 EOF
 if [ "$SWAN_VER" = "3.32" ] || ! grep -qs 'VERSION_CODENAME=' /etc/os-release; then
diff --git a/extras/vpnupgrade_amzn.sh b/extras/vpnupgrade_amzn.sh
index 8c462db..5afebb4 100755
--- a/extras/vpnupgrade_amzn.sh
+++ b/extras/vpnupgrade_amzn.sh
@@ -174,7 +174,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 cd "libreswan-$SWAN_VER" || exit 1
 [ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 EOF
 echo "USE_DH2=true" >> Makefile.inc.local
diff --git a/extras/vpnupgrade_centos.sh b/extras/vpnupgrade_centos.sh
index d271d5d..80dc740 100755
--- a/extras/vpnupgrade_centos.sh
+++ b/extras/vpnupgrade_centos.sh
@@ -206,7 +206,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 cd "libreswan-$SWAN_VER" || exit 1
 [ "$SWAN_VER" = "4.1" ] && sed -i 's/ sysv )/ sysvinit )/' programs/setup/setup.in
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 EOF
 echo "USE_DH2=true" >> Makefile.inc.local
diff --git a/vpnsetup.sh b/vpnsetup.sh
index b38807c..e79200e 100755
--- a/vpnsetup.sh
+++ b/vpnsetup.sh
@@ -220,7 +220,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 
 cd "libreswan-$SWAN_VER" || exit 1
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 USE_DH2=true
 USE_NSS_KDF=false
diff --git a/vpnsetup_amzn.sh b/vpnsetup_amzn.sh
index 246f0e8..7988894 100755
--- a/vpnsetup_amzn.sh
+++ b/vpnsetup_amzn.sh
@@ -184,7 +184,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 
 cd "libreswan-$SWAN_VER" || exit 1
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 USE_DH2=true
 USE_NSS_KDF=false
diff --git a/vpnsetup_centos.sh b/vpnsetup_centos.sh
index 7b35e6f..43482a6 100755
--- a/vpnsetup_centos.sh
+++ b/vpnsetup_centos.sh
@@ -233,7 +233,7 @@ bigecho "Compiling and installing Libreswan, please wait..."
 
 cd "libreswan-$SWAN_VER" || exit 1
 cat > Makefile.inc.local <<'EOF'
-WERROR_CFLAGS=-w
+WERROR_CFLAGS=-w -s
 USE_DNSSEC=false
 USE_DH2=true
 USE_NSS_KDF=false