diff -r -U 3 minecraft\net\minecraft\tileentity\TileEntityPiston.java minecraft_patched\net\minecraft\tileentity\TileEntityPiston.java
--- minecraft\net\minecraft\tileentity\TileEntityPiston.java
+++ minecraft_patched\net\minecraft\tileentity\TileEntityPiston.java
@@ -149,7 +149,7 @@
                      d1 = Math.min(d1, d0) + 0.01D;
                      field_190613_i.set(enumfacing);
                      entity.func_70091_d(MoverType.PISTON, d1 * (double)enumfacing.func_82601_c(), d1 * (double)enumfacing.func_96559_d(), d1 * (double)enumfacing.func_82599_e());
-                     field_190613_i.set((Object)null);
+                     field_190613_i.set(null);
                      if (!this.field_145875_k && this.field_145872_l) {
                         this.func_190605_a(entity, enumfacing, d0);
                      }
@@ -230,7 +230,7 @@
             d0 = Math.min(d0, p_190605_3_) + 0.01D;
             field_190613_i.set(p_190605_2_);
             p_190605_1_.func_70091_d(MoverType.PISTON, d0 * (double)enumfacing.func_82601_c(), d0 * (double)enumfacing.func_96559_d(), d0 * (double)enumfacing.func_82599_e());
-            field_190613_i.set((Object)null);
+            field_190613_i.set(null);
          }
       }