1 files changed, 4 insertions, 2 deletions
diff --git a/src/main/java/design/persistence/JSONPersonalDatabase.java b/src/main/java/design/persistence/JSONPersonalDatabase.java
index 511d962..dd63407 100644
--- a/src/main/java/design/persistence/JSONPersonalDatabase.java
+++ b/src/main/java/design/persistence/JSONPersonalDatabase.java
@@ -1,11 +1,13 @@
 package design.persistence;
 
 import com.fasterxml.jackson.annotation.JsonAutoDetect;
+import com.fasterxml.jackson.annotation.JsonCreator;
 import com.fasterxml.jackson.annotation.PropertyAccessor;
 import com.fasterxml.jackson.core.JsonGenerator;
 import com.fasterxml.jackson.core.JsonParser;
 import com.fasterxml.jackson.databind.*;
 import com.fasterxml.jackson.databind.module.SimpleModule;
+import com.fasterxml.jackson.module.paramnames.ParameterNamesModule;
 import design.model.Course;
 import design.model.Golfer;
 
@@ -30,7 +32,7 @@ public class JSONPersonalDatabase implements PersonalDatabase {
         module.addSerializer(Course.class, new CourseIdSerializer());
         mapper.registerModule(module);
         mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
-        mapper.writerWithDefaultPrettyPrinter();
+        mapper.registerModule(new ParameterNamesModule(JsonCreator.Mode.PROPERTIES));
 
         try {
             load();
@@ -49,7 +51,7 @@ public class JSONPersonalDatabase implements PersonalDatabase {
 
     private void save() throws IOException {
         Golfer[] data = cache.values().toArray(Golfer[]::new);
-        mapper.writeValue(file, data);
+        mapper.writerWithDefaultPrettyPrinter().writeValue(file, data);
     }
 
     @Override