diff --git a/src/main/java/org/gitlab4j/api/systemhooks/MergeRequestSystemHookEvent.java b/src/main/java/org/gitlab4j/api/systemhooks/MergeRequestSystemHookEvent.java
index d0f791d2..43ad9d5d 100644
--- a/src/main/java/org/gitlab4j/api/systemhooks/MergeRequestSystemHookEvent.java
+++ b/src/main/java/org/gitlab4j/api/systemhooks/MergeRequestSystemHookEvent.java
@@ -2,6 +2,8 @@
 
 import org.gitlab4j.api.webhook.MergeRequestEvent;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
+
 public class MergeRequestSystemHookEvent extends MergeRequestEvent implements SystemHookEvent {
     private static final long serialVersionUID = 1L;
 
@@ -9,6 +11,7 @@ public class MergeRequestSystemHookEvent extends MergeRequestEvent implements Sy
     public static final String MERGE_REQUEST_EVENT = "merge_request";
 
     private String eventType;
+    private String eventName;
 
     @Override
     public String getObjectKind() {
@@ -17,14 +20,28 @@ public String getObjectKind() {
 
     @Override
     public String getEventName() {
-        return (MERGE_REQUEST_EVENT);
+        return eventName;
+    }
+
+    public void setEventName(String eventName) {
+        this.eventName = eventName;
     }
 
     public String getEventType() {
         return eventType;
     }
+    
+    public void setEventType(String eventType) {
+        this.eventType = eventType;
+    }
 
+    /**
+     * @deprecated use {@link #setEventType(String)} instead
+     * @param eventType
+     */
+    @Deprecated
+    @JsonIgnore
     public void setEvent_type(String eventType) {
-        this.eventType = eventType;
+        setEventType(eventType);
     }
 }
diff --git a/src/test/java/org/gitlab4j/api/JsonUtils.java b/src/test/java/org/gitlab4j/api/JsonUtils.java
index d90e095e..c3ee53d9 100644
--- a/src/test/java/org/gitlab4j/api/JsonUtils.java
+++ b/src/test/java/org/gitlab4j/api/JsonUtils.java
@@ -22,6 +22,7 @@
 
 import com.fasterxml.jackson.core.JsonParseException;
 import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.JsonMappingException;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.MapperFeature;
@@ -34,6 +35,7 @@ public class JsonUtils {
         jacksonJson = new JacksonJson();
         jacksonJson.getObjectMapper().configure(SerializationFeature.ORDER_MAP_ENTRIES_BY_KEYS, true);
         jacksonJson.getObjectMapper().configure(MapperFeature.SORT_PROPERTIES_ALPHABETICALLY, true);
+        jacksonJson.getObjectMapper().configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, true);
     }
 
     static JsonNode readTreeFromMap(Map<String, Object> map) throws JsonParseException, JsonMappingException, IOException {
diff --git a/src/test/resources/org/gitlab4j/api/bad-branch.json b/src/test/resources/org/gitlab4j/api/bad-branch.json
index 92213a52..0ffc475e 100644
--- a/src/test/resources/org/gitlab4j/api/bad-branch.json
+++ b/src/test/resources/org/gitlab4j/api/bad-branch.json
@@ -1,20 +1,18 @@
- {
-    "commit": {
-      "id": "7b5c3cc8be40ee161ae89a06bba6229da1032a0c",
-      "parents": [{ "id": "4ad91d3c1144c406e50c7b33bae684bd6837faf8" }],
-      "tree": "46e82de44b1061621357f24c05515327f2795a95",
-      "message": "add projects API",
-      "author": {
-        "name": "John Smith",
-        "email": "john@example.com"
-      },
-      "committer": {
-        "name": "John Smith",
-        "email": "john@example.com"
-      },
-      "authored_date": "2012-06-27T12:51:39Z",
-      "committed_date": "2012-06-28T10:44:20Z"
-    },
-    "protected": true
+{
+  "commit": {
+    "author_email": "john@example.com",
+    "author_name": "John Smith",
+    "authored_date": "2012-06-27T05:51:39Z",
+    "committed_date": "2012-06-28T03:44:20Z",
+    "committer_email": "john@example.com",
+    "committer_name": "John Smith",
+    "id": "7b5c3cc8be40ee161ae89a06bba6229da1032a0c",
+    "short_id": "7b5c3cc",
+    "title": "add projects API",
+    "message": "add projects API",
+    "parent_ids": [
+      "4ad91d3c1144c406e50c7b33bae684bd6837faf8"
+    ]
+  },
+  "protected": true
 }
-