diff --git a/src/main/java/ca/uhn/fhir/jpa/starter/HapiProperties.java b/src/main/java/ca/uhn/fhir/jpa/starter/HapiProperties.java
index 6d620df..81fd2e0 100644
--- a/src/main/java/ca/uhn/fhir/jpa/starter/HapiProperties.java
+++ b/src/main/java/ca/uhn/fhir/jpa/starter/HapiProperties.java
@@ -45,7 +45,7 @@ public class HapiProperties {
     static final String SUBSCRIPTION_EMAIL_ENABLED = "subscription.email.enabled";
     static final String SUBSCRIPTION_RESTHOOK_ENABLED = "subscription.resthook.enabled";
     static final String SUBSCRIPTION_WEBSOCKET_ENABLED = "subscription.websocket.enabled";
-    static final String ALLOWED_BUNDLE_TYPES = "allowedBundleTypes";
+    static final String ALLOWED_BUNDLE_TYPES = "allowed_bundle_types";
     static final String TEST_PORT = "test.port";
     static final String TESTER_CONFIG_REFUSE_TO_FETCH_THIRD_PARTY_URLS = "tester.config.refuse_to_fetch_third_party_urls";
     static final String CORS_ENABLED = "cors.enabled";
diff --git a/src/main/resources/hapi.properties b/src/main/resources/hapi.properties
index deac1b4..a29ca68 100644
--- a/src/main/resources/hapi.properties
+++ b/src/main/resources/hapi.properties
@@ -95,7 +95,7 @@ cors.allow_origin=*
 ##################################################
 # Allowed Bundle Types for persistence (defaults are: COLLECTION,DOCUMENT,MESSAGE)
 ##################################################
-#allowedBundleTypes=COLLECTION,DOCUMENT,MESSAGE,TRANSACTION,TRANSACTIONRESPONSE,BATCH,BATCHRESPONSE,HISTORY,SEARCHSET
+#allowed_bundle_types=COLLECTION,DOCUMENT,MESSAGE,TRANSACTION,TRANSACTIONRESPONSE,BATCH,BATCHRESPONSE,HISTORY,SEARCHSET
 
 ##################################################
 # Subscriptions