diff --git a/src/main/java/io/supertokens/pluginInterface/multitenancy/ThirdPartyConfig.java b/src/main/java/io/supertokens/pluginInterface/multitenancy/ThirdPartyConfig.java
index a100096f..d77a3e75 100644
--- a/src/main/java/io/supertokens/pluginInterface/multitenancy/ThirdPartyConfig.java
+++ b/src/main/java/io/supertokens/pluginInterface/multitenancy/ThirdPartyConfig.java
@@ -152,7 +152,7 @@ public JsonObject toJson() {
             JsonObject result = new Gson().toJsonTree(this).getAsJsonObject();
 
             // These properties need to retain null values when serialized
-            if (this.authorizationEndpoint != null) {
+            if (this.authorizationEndpointQueryParams != null) {
                 result.add("authorizationEndpointQueryParams",
                         new GsonBuilder().serializeNulls().create().toJsonTree(this.authorizationEndpointQueryParams));
             } else {