diff --git a/src/main/java/ru/dmitriymx/astralcheckreport/Main.java b/src/main/java/ru/dmitriymx/astralcheckreport/Main.java
index fc82358..511cd87 100644
--- a/src/main/java/ru/dmitriymx/astralcheckreport/Main.java
+++ b/src/main/java/ru/dmitriymx/astralcheckreport/Main.java
@@ -21,7 +21,7 @@ public class Main implements Runnable {
     private Logger logger = LoggerFactory.getLogger(Main.class);
     private ExcelReader excel;
     private Properties properties = new Properties();
-    public static long sleepThread = 100;
+    static long sleepThread = 100;
     public static SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy");
     public static Date currentDate = new Date(System.currentTimeMillis());
 
@@ -72,7 +72,7 @@ public class Main implements Runnable {
         return excel.getNextData();
     }
 
-    public static void safeSleep(long ms) {
+    static void safeSleep(long ms) {
         try {
             Thread.sleep(ms);
         } catch (InterruptedException ignore) {
diff --git a/src/main/java/ru/dmitriymx/astralcheckreport/objects/LeftObject.java b/src/main/java/ru/dmitriymx/astralcheckreport/objects/LeftObject.java
index 9557c2d..318b754 100644
--- a/src/main/java/ru/dmitriymx/astralcheckreport/objects/LeftObject.java
+++ b/src/main/java/ru/dmitriymx/astralcheckreport/objects/LeftObject.java
@@ -5,10 +5,7 @@
 package ru.dmitriymx.astralcheckreport.objects;
 
 public class LeftObject {
-    public int id;
-
-    public LeftObject() {
-    }
+    private int id;
 
     public LeftObject(int id) {
         this.id = id;
@@ -16,7 +13,11 @@ public class LeftObject {
 
     @Override
     public boolean equals(Object obj) {
-        LeftObject lobj = (LeftObject) obj;
-        return this.id == lobj.id;
+        if (obj instanceof LeftObject) {
+            LeftObject lobj = (LeftObject) obj;
+            return this.id == lobj.id;
+        } else {
+            return false;
+        }
     }
 }
diff --git a/src/main/java/ru/dmitriymx/astralcheckreport/objects/Organization.java b/src/main/java/ru/dmitriymx/astralcheckreport/objects/Organization.java
index dda1d1e..6bc17a7 100644
--- a/src/main/java/ru/dmitriymx/astralcheckreport/objects/Organization.java
+++ b/src/main/java/ru/dmitriymx/astralcheckreport/objects/Organization.java
@@ -7,7 +7,7 @@ package ru.dmitriymx.astralcheckreport.objects;
 import java.util.List;
 
 public class Organization {
-    public int id;
+    int id;
     public String inn, kpp;
     public List<Product> products;
     public String companyGroupName;
diff --git a/src/main/java/ru/dmitriymx/astralcheckreport/objects/Product.java b/src/main/java/ru/dmitriymx/astralcheckreport/objects/Product.java
index a43144c..78ca2fd 100644
--- a/src/main/java/ru/dmitriymx/astralcheckreport/objects/Product.java
+++ b/src/main/java/ru/dmitriymx/astralcheckreport/objects/Product.java
@@ -7,7 +7,6 @@ package ru.dmitriymx.astralcheckreport.objects;
 import com.google.gson.annotations.SerializedName;
 
 import java.util.List;
-import java.util.Map;
 
 public class Product {
     public int id;