diff --git a/test/3-dual-rsa-ecdsa.bats b/test/3-dual-rsa-ecdsa.bats
index 486fa13..87527c2 100644
--- a/test/3-dual-rsa-ecdsa.bats
+++ b/test/3-dual-rsa-ecdsa.bats
@@ -15,7 +15,14 @@ setup() {
     if [ -n "$STAGING" ]; then
         skip "Using staging server, skipping internal test"
     fi
-    CONFIG_FILE="getssl-http01-dual-rsa-ecdsa.cfg"
+
+    check_nginx
+    if [ "$OLD_NGINX" = "false" ]; then
+        CONFIG_FILE="getssl-http01-dual-rsa-ecdsa.cfg"
+    else
+        CONFIG_FILE="getssl-http01-dual-rsa-ecdsa-old-nginx.cfg"
+    fi
+
     setup_environment
     init_getssl
     create_certificate
@@ -28,6 +35,22 @@ setup() {
 }
 
 
+@test "Check renewal test works for dual certificates using HTTP-01" {
+    if [ -n "$STAGING" ]; then
+        skip "Using staging server, skipping internal test"
+    fi
+    check_nginx
+    run ${CODE_DIR}/getssl -d $GETSSL_HOST
+
+    if [ "$OLD_NGINX" = "false" ]; then
+        assert_line "certificate on server is same as the local cert"
+    else
+        assert_line --partial "certificate is valid for more than 30 days"
+    fi
+    assert_success
+}
+
+
 @test "Force renewal of dual certificates using HTTP-01" {
     if [ -n "$STAGING" ]; then
         skip "Using staging server, skipping internal test"
@@ -37,11 +60,19 @@ setup() {
     check_output_for_errors
 }
 
+
 @test "Create dual certificates using DNS-01 verification" {
     if [ -n "$STAGING" ]; then
         skip "Using staging server, skipping internal test"
     fi
-    CONFIG_FILE="getssl-dns01-dual-rsa-ecdsa.cfg"
+
+    check_nginx
+    if [ "$OLD_NGINX" = "false" ]; then
+        CONFIG_FILE="getssl-dns01-dual-rsa-ecdsa.cfg"
+    else
+        CONFIG_FILE="getssl-dns01-dual-rsa-ecdsa-old-nginx.cfg"
+    fi
+
     setup_environment
     init_getssl
     create_certificate
diff --git a/test/6-dual-rsa-ecdsa-copy-2-locations.bats b/test/6-dual-rsa-ecdsa-copy-2-locations.bats
index 394e8d6..a8e7653 100644
--- a/test/6-dual-rsa-ecdsa-copy-2-locations.bats
+++ b/test/6-dual-rsa-ecdsa-copy-2-locations.bats
@@ -25,7 +25,14 @@ teardown() {
     if [ -n "$STAGING" ]; then
         skip "Using staging server, skipping internal test"
     fi
-    CONFIG_FILE="getssl-http01-dual-rsa-ecdsa-2-locations.cfg"
+
+    check_nginx
+    if [ "$OLD_NGINX" = "false" ]; then
+        CONFIG_FILE="getssl-http01-dual-rsa-ecdsa-2-locations.cfg"
+    else
+        CONFIG_FILE="getssl-http01-dual-rsa-ecdsa-2-locations-old-nginx.cfg"
+    fi
+
     setup_environment
     mkdir -p /root/a.${GETSSL_HOST}
 
diff --git a/test/Dockerfile-centos6 b/test/Dockerfile-centos6
index 61c8b6b..5ffc91c 100644
--- a/test/Dockerfile-centos6
+++ b/test/Dockerfile-centos6
@@ -1,6 +1,9 @@
 FROM centos:centos6
 
 # Note this image uses gawk
+# Note if you are running this using WSL2 you need to put the following lines in %userprofile%\.wslconfig
+# [wsl2]
+# kernelCommandLine = vsyscall=emulate
 
 # Update and install required software
 RUN yum -y update
diff --git a/test/test-config/getssl-dns01-dual-rsa-ecdsa-old-nginx.cfg b/test/test-config/getssl-dns01-dual-rsa-ecdsa-old-nginx.cfg
new file mode 100644
index 0000000..062a47c
--- /dev/null
+++ b/test/test-config/getssl-dns01-dual-rsa-ecdsa-old-nginx.cfg
@@ -0,0 +1,39 @@
+# Uncomment and modify any variables you need
+# see https://github.com/srvrco/getssl/wiki/Config-variables for details
+# see https://github.com/srvrco/getssl/wiki/Example-config-files for example configs
+#
+CA="https://pebble:14000/dir"
+
+VALIDATE_VIA_DNS=true
+DNS_ADD_COMMAND="/getssl/dns_scripts/dns_add_challtestsrv"
+DNS_DEL_COMMAND="/getssl/dns_scripts/dns_del_challtestsrv"
+PUBLIC_DNS_SERVER=10.30.50.3
+DNS_EXTRA_WAIT=""
+
+DUAL_RSA_ECDSA="true"
+ACCOUNT_KEY_TYPE="prime256v1"
+PRIVATE_KEY_ALG="prime256v1"
+
+# Additional domains - this could be multiple domains / subdomains in a comma separated list
+SANS=""
+
+# Acme Challenge Location. The first line for the domain, the following ones for each additional domain.
+ACL=('/var/www/html/.well-known/acme-challenge')
+
+#Set USE_SINGLE_ACL="true" to use a single ACL for all checks
+USE_SINGLE_ACL="false"
+
+# Location for all your certs, these can either be on the server (full path name)
+# or using ssh /sftp as for the ACL
+DOMAIN_CERT_LOCATION="/etc/nginx/pki/server.ec.crt"
+DOMAIN_KEY_LOCATION="/etc/nginx/pki/private/server.ec.key"
+CA_CERT_LOCATION="/etc/nginx/pki/chain.crt"
+DOMAIN_CHAIN_LOCATION="" # this is the domain cert and CA cert
+DOMAIN_PEM_LOCATION="" # this is the domain_key, domain cert and CA cert
+
+# The command needed to reload apache / nginx or whatever you use
+RELOAD_CMD="cp /getssl/test/test-config/nginx-ubuntu-ssl ${NGINX_CONFIG} && /getssl/test/restart-nginx"
+
+# Define the server type and confirm correct certificate is installed
+SERVER_TYPE="https"
+CHECK_REMOTE="false"
diff --git a/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations-old-nginx.cfg b/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations-old-nginx.cfg
new file mode 100644
index 0000000..50c3970
--- /dev/null
+++ b/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations-old-nginx.cfg
@@ -0,0 +1,32 @@
+# Test that more than one location can be specified for CERT and KEY locations and that the
+# files are copied to both locations when both RSA and ECDSA certificates are created
+#
+CA="https://pebble:14000/dir"
+
+DUAL_RSA_ECDSA="true"
+ACCOUNT_KEY_TYPE="prime256v1"
+PRIVATE_KEY_ALG="prime256v1"
+
+# Additional domains - this could be multiple domains / subdomains in a comma separated list
+SANS="a.${GETSSL_HOST}"
+
+# Acme Challenge Location.
+ACL=('/var/www/html/.well-known/acme-challenge')
+
+#Set USE_SINGLE_ACL="true" to use a single ACL for all checks
+USE_SINGLE_ACL="true"
+
+# Location for all your certs, these can either be on the server (full path name)
+# or using ssh /sftp as for the ACL
+DOMAIN_CERT_LOCATION="/etc/nginx/pki/server.crt"
+DOMAIN_KEY_LOCATION="/etc/nginx/pki/private/server.key;/root/a.${GETSSL_HOST}/server.key"
+CA_CERT_LOCATION="/etc/nginx/pki/chain.crt"
+DOMAIN_CHAIN_LOCATION="/etc/nginx/pki/domain-chain.crt;/root/a.${GETSSL_HOST}/domain-chain.crt" # this is the domain cert and CA cert
+DOMAIN_PEM_LOCATION="" # this is the domain_key, domain cert and CA cert
+
+# The command needed to reload apache / nginx or whatever you use
+RELOAD_CMD="cp /getssl/test/test-config/nginx-ubuntu-ssl ${NGINX_CONFIG} && /getssl/test/restart-nginx"
+
+# Define the server type and confirm correct certificate is installed
+SERVER_TYPE="https"
+CHECK_REMOTE="false"
diff --git a/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations.cfg b/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations.cfg
index 80533ce..96e4d4d 100644
--- a/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations.cfg
+++ b/test/test-config/getssl-http01-dual-rsa-ecdsa-2-locations.cfg
@@ -25,7 +25,7 @@ DOMAIN_CHAIN_LOCATION="/etc/nginx/pki/domain-chain.crt;/root/a.${GETSSL_HOST}/do
 DOMAIN_PEM_LOCATION="" # this is the domain_key, domain cert and CA cert
 
 # The command needed to reload apache / nginx or whatever you use
-RELOAD_CMD="cp /getssl/test/test-config/nginx-ubuntu-ssl ${NGINX_CONFIG} && /getssl/test/restart-nginx"
+RELOAD_CMD="cp /getssl/test/test-config/nginx-ubuntu-dual-certs ${NGINX_CONFIG} && /getssl/test/restart-nginx"
 
 # Define the server type and confirm correct certificate is installed
 SERVER_TYPE="https"
diff --git a/test/test-config/getssl-http01-dual-rsa-ecdsa-old-nginx.cfg b/test/test-config/getssl-http01-dual-rsa-ecdsa-old-nginx.cfg
new file mode 100644
index 0000000..41581ae
--- /dev/null
+++ b/test/test-config/getssl-http01-dual-rsa-ecdsa-old-nginx.cfg
@@ -0,0 +1,33 @@
+# Uncomment and modify any variables you need
+# see https://github.com/srvrco/getssl/wiki/Config-variables for details
+# see https://github.com/srvrco/getssl/wiki/Example-config-files for example configs
+#
+CA="https://pebble:14000/dir"
+
+DUAL_RSA_ECDSA="true"
+ACCOUNT_KEY_TYPE="prime256v1"
+PRIVATE_KEY_ALG="prime256v1"
+
+# Additional domains - this could be multiple domains / subdomains in a comma separated list
+SANS=""
+
+# Acme Challenge Location.
+ACL=('/var/www/html/.well-known/acme-challenge')
+
+#Set USE_SINGLE_ACL="true" to use a single ACL for all checks
+USE_SINGLE_ACL="false"
+
+# Location for all your certs, these can either be on the server (full path name)
+# or using ssh /sftp as for the ACL
+DOMAIN_CERT_LOCATION="/etc/nginx/pki/server.ec.crt"
+DOMAIN_KEY_LOCATION="/etc/nginx/pki/private/server.ec.key"
+CA_CERT_LOCATION="/etc/nginx/pki/chain.crt"
+DOMAIN_CHAIN_LOCATION="" # this is the domain cert and CA cert
+DOMAIN_PEM_LOCATION="" # this is the domain_key, domain cert and CA cert
+
+# The command needed to reload apache / nginx or whatever you use
+RELOAD_CMD="cp /getssl/test/test-config/nginx-ubuntu-ssl ${NGINX_CONFIG} && /getssl/test/restart-nginx"
+
+# Define the server type and confirm correct certificate is installed
+SERVER_TYPE="https"
+CHECK_REMOTE="false"
diff --git a/test/test-config/nginx-ubuntu-dual-certs b/test/test-config/nginx-ubuntu-dual-certs
index 6346cde..ce1fbbf 100644
--- a/test/test-config/nginx-ubuntu-dual-certs
+++ b/test/test-config/nginx-ubuntu-dual-certs
@@ -42,6 +42,8 @@ server {
 	# Add index.php to the list if you are using PHP
 	index index.html index.htm index.nginx-debian.html;
 
+    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
+
 	server_name _;
     ssl_certificate /etc/nginx/pki/server.crt;
     ssl_certificate_key /etc/nginx/pki/private/server.key;
diff --git a/test/test_helper.bash b/test/test_helper.bash
index 1e65189..fafad5c 100644
--- a/test/test_helper.bash
+++ b/test/test_helper.bash
@@ -8,6 +8,20 @@ check_certificates()
     assert [ -e "${INSTALL_DIR}/.getssl/${GETSSL_CMD_HOST}/${GETSSL_CMD_HOST}.crt" ]
 }
 
+# Only nginx > 1.11.0 support dual certificates in a single configuration file
+# https://unix.stackexchange.com/questions/285924/how-to-compare-a-programs-version-in-a-shell-script
+check_nginx() {
+    requiredver="1.11.0"
+    currentver="$(nginx -v)"
+    if [ "$(printf '%s\n' "$requiredver" "$currentver" | sort -V | head -n1)" = "$requiredver" ]; then
+        export OLD_NGINX="false"
+    else
+        echo "INFO: Running nginx version $currentver which doesn't support dual certificates" >&3
+        echo "INFO: not checking that certificate is installed correctly" >&3
+        export OLD_NGINX="true"
+    fi
+}
+
 check_output_for_errors() {
     refute_output --regexp '[Ff][Aa][Ii][Ll][Ee][Dd]'
     # less strict tests if running with debug output