diff --git a/deploy/unifi.sh b/deploy/unifi.sh
index 9ee7114c..9ae54f2b 100644
--- a/deploy/unifi.sh
+++ b/deploy/unifi.sh
@@ -150,14 +150,21 @@ unifi_deploy() {
       -password pass:aircontrolenterprise \
       -nokeys | ${ACME_OPENSSL_BIN:-openssl} x509 -text \
       -noout | grep -i "signature" | grep -iq ecdsa >/dev/null 2>&1; then
-      cp -f /usr/lib/unifi/data/system.properties /usr/lib/unifi/data/system.properties_original
-      _info "Updating system configuration for cipher compatibility."
-      _info "Saved original system config to /usr/lib/unifi/data/system.properties_original"
-      sed -i '/unifi\.https\.ciphers/d' /usr/lib/unifi/data/system.properties
-      echo "unifi.https.ciphers=ECDHE-ECDSA-AES256-GCM-SHA384,ECDHE-RSA-AES128-GCM-SHA256" >>/usr/lib/unifi/data/system.properties
-      sed -i '/unifi\.https\.sslEnabledProtocols/d' /usr/lib/unifi/data/system.properties
-      echo "unifi.https.sslEnabledProtocols=TLSv1.3,TLSv1.2" >>/usr/lib/unifi/data/system.properties
-      _info "System configuration updated."
+      if [ -f "$(dirname ${DEPLOY_UNIFI_KEYSTORE})/system.properties" ] ; then
+        _unifi_system_properties="$(dirname ${DEPLOY_UNIFI_KEYSTORE})/system.properties"
+      else
+        _unifi_system_properties="/usr/lib/unifi/data/system.properties"
+      fi
+      if [ -f "${_unifi_system_properties}" ] ; then
+        cp -f "${_unifi_system_properties}" "${_unifi_system_properties}"_original
+        _info "Updating system configuration for cipher compatibility."
+        _info "Saved original system config to ${_unifi_system_properties}_original"
+        sed -i '/unifi\.https\.ciphers/d' "${_unifi_system_properties}"
+        echo "unifi.https.ciphers=ECDHE-ECDSA-AES256-GCM-SHA384,ECDHE-RSA-AES128-GCM-SHA256" >>"${_unifi_system_properties}"
+        sed -i '/unifi\.https\.sslEnabledProtocols/d' "${_unifi_system_properties}"
+        echo "unifi.https.sslEnabledProtocols=TLSv1.3,TLSv1.2" >>"${_unifi_system_properties}"
+        _info "System configuration updated."
+      fi
     fi
 
     rm "$_import_pkcs12"