diff --git a/config/config.md b/config/config.md
index 09c124053..4b36647f2 100644
--- a/config/config.md
+++ b/config/config.md
@@ -84,6 +84,8 @@ The following config option are provided by the OpenHIM. All of these options ha
     "openid": {
       // Openid connect provider realm url link
       "url": "http://localhost:9088/realms/platform-realm",
+      // (Optional) Openid connect provider issuer url incase this is different from the api url e.g. if you are using a proxy
+      "issuerUrl": "http://localhost:9088/realms/platform-realm",
       // Callback URL used by openid connect provider (should be the same callback URL specified in realm)
       "callbackUrl": "http://localhost:9000",
       // CLient ID specified in the realm
diff --git a/src/passport.js b/src/passport.js
index 596c7cc52..42a701254 100644
--- a/src/passport.js
+++ b/src/passport.js
@@ -52,7 +52,7 @@ passport.loadStrategies = function () {
     openid: {
       strategy: passportOpenid.Strategy,
       options: {
-        issuer: openidConfig.url,
+        issuer: openidConfig.issuerUrl || openidConfig.url,
         authorizationURL: `${openidConfig.url}/protocol/openid-connect/auth`,
         tokenURL: `${openidConfig.url}/protocol/openid-connect/token`,
         userInfoURL: `${openidConfig.url}/protocol/openid-connect/userinfo`,