--- a/net/minecraft/server/EntityMinecartMobSpawner.java
+++ b/net/minecraft/server/EntityMinecartMobSpawner.java
@@ -63,4 +63,10 @@
         super.B_();
         this.a.c();
     }
+
+    // CraftBukkit start
+    public boolean bC() {
+        return true;
+    }
+    // CraftBukkit end
 }