diff --git a/src/main/java/org/dynmap/DynmapPlugin.java b/src/main/java/org/dynmap/DynmapPlugin.java
index f5aada1b..2b97fba4 100644
--- a/src/main/java/org/dynmap/DynmapPlugin.java
+++ b/src/main/java/org/dynmap/DynmapPlugin.java
@@ -115,7 +115,7 @@ public class DynmapPlugin extends JavaPlugin {
 
 		if(configuration.getBoolean("jsonfile", false)) {
 			jsonConfig();
-			int jsonInterval = configuration.getInt("jsonfile", 1) * 1000;
+			int jsonInterval = configuration.getInt("jsonfile-interval", 1) * 1000;
 			 timer = new Timer();
 			 timer.scheduleAtFixedRate(new JsonTimerTask(this, configuration), jsonInterval, jsonInterval);
 		}
diff --git a/src/main/java/org/dynmap/JsonTimerTask.java b/src/main/java/org/dynmap/JsonTimerTask.java
index a49f9852..104a29d4 100644
--- a/src/main/java/org/dynmap/JsonTimerTask.java
+++ b/src/main/java/org/dynmap/JsonTimerTask.java
@@ -52,7 +52,7 @@ class JsonTimerTask extends TimerTask
             update.players[i] = new Client.Player(p.getName(), pl.getWorld().getName(), pl.getX(), pl.getY(), pl.getZ());
         }
 
-        update.updates = mapManager.getWorldUpdates(world.getName(), current - 10L);
+        update.updates = mapManager.getWorldUpdates(world.getName(), current - (configuration.getInt("jsonfile-interval", 1) + 10));
 
 		File webpath = new File(this.configuration.getString("webpath", "web"), "dynmap_"+world.getName()+".json");
 		File outputFile;