diff --git a/src/main/java/ru/touchin/templates/calendar/CalendarUtils.java b/src/main/java/ru/touchin/templates/calendar/CalendarUtils.java
index 6b63458..a4e9327 100644
--- a/src/main/java/ru/touchin/templates/calendar/CalendarUtils.java
+++ b/src/main/java/ru/touchin/templates/calendar/CalendarUtils.java
@@ -111,7 +111,7 @@ public final class CalendarUtils {
                 addition = 0;
             } else {
                 count++;
-                addition = ((int) Math.ceil(count / 2)) * ((int) (StrictMath.pow(-1, (count - 1))));
+                addition = ((int) Math.ceil(count / 2)) * ((int) StrictMath.pow(-1, count - 1));
             }
         }
     }
@@ -159,7 +159,7 @@ public final class CalendarUtils {
 
                 if (firstDayInWeek != 0) {
                     calendarItems.add(new CalendarEmptyItem(shift + daysEnded, shift + daysEnded + (DAYS_IN_WEEK - firstDayInWeek - 1)));
-                    shift += (DAYS_IN_WEEK - firstDayInWeek);
+                    shift += DAYS_IN_WEEK - firstDayInWeek;
                 }
 
                 calendarItems.add(new CalendarHeaderItem(tempTime.getYear(), tempTime.getMonthOfYear() - 1, shift + daysEnded, shift + daysEnded));
diff --git a/src/main/java/ru/touchin/templates/logansquare/LoganSquareJodaTimeConverter.java b/src/main/java/ru/touchin/templates/logansquare/LoganSquareJodaTimeConverter.java
index 0c4683a..c874f96 100644
--- a/src/main/java/ru/touchin/templates/logansquare/LoganSquareJodaTimeConverter.java
+++ b/src/main/java/ru/touchin/templates/logansquare/LoganSquareJodaTimeConverter.java
@@ -43,8 +43,8 @@ public class LoganSquareJodaTimeConverter implements TypeConverter<DateTime> {
         final String dateString = jsonParser.getValueAsString();
         try {
             return new DateTime(dateString);
-        } catch (RuntimeException e) {
-            Lc.assertion(e);
+        } catch (final RuntimeException exception) {
+            Lc.assertion(exception);
         }
         return null;
     }
diff --git a/src/main/java/ru/touchin/templates/requests/HttpRequest.java b/src/main/java/ru/touchin/templates/requests/HttpRequest.java
index d3dcbfa..0fba412 100644
--- a/src/main/java/ru/touchin/templates/requests/HttpRequest.java
+++ b/src/main/java/ru/touchin/templates/requests/HttpRequest.java
@@ -214,8 +214,8 @@ public abstract class HttpRequest<T> {
                         .<T>create(requestSubscriber -> {
                             try {
                                 requestSubscriber.onNext(executeSyncInternal(requestController));
-                            } catch (final IOException e) {
-                                requestSubscriber.onError(e);
+                            } catch (final IOException exception) {
+                                requestSubscriber.onError(exception);
                             }
                             requestSubscriber.onCompleted();
                         })
diff --git a/src/main/java/ru/touchin/templates/validation/ValidationFunc.java b/src/main/java/ru/touchin/templates/validation/ValidationFunc.java
index 02a1e82..ac1804c 100644
--- a/src/main/java/ru/touchin/templates/validation/ValidationFunc.java
+++ b/src/main/java/ru/touchin/templates/validation/ValidationFunc.java
@@ -9,13 +9,15 @@ import java.io.Serializable;
  * Simple interface that gets one parameter with {@link TInput} type as input and returns other type {@link TReturn} as a result.
  * Interface extends {@link Serializable} to survive after {@link ru.touchin.roboswag.components.navigation.AbstractState} recreation.
  * Created as a replace for {@link rx.functions.Func1} because it needed to be {@link Serializable}
- * @param <TInput> input type.
+ *
+ * @param <TInput>  input type.
  * @param <TReturn> return type.
  */
-public interface ValidationFunc<TInput, TReturn> extends Serializable  {
+public interface ValidationFunc<TInput, TReturn> extends Serializable {
 
     /**
      * The method maps some {@link TInput} type argument into a {@link TReturn} type.
+     *
      * @param input data;
      * @return mapped data into a {@link TReturn} type.
      * @throws Throwable for catching conversion errors.
diff --git a/src/main/java/ru/touchin/templates/validation/validators/SameTypeValidator.java b/src/main/java/ru/touchin/templates/validation/validators/SameTypeValidator.java
index ee63bfa..ae2f08b 100644
--- a/src/main/java/ru/touchin/templates/validation/validators/SameTypeValidator.java
+++ b/src/main/java/ru/touchin/templates/validation/validators/SameTypeValidator.java
@@ -9,8 +9,6 @@ import ru.touchin.roboswag.core.utils.pairs.HalfNullablePair;
 import ru.touchin.templates.validation.ValidationState;
 import rx.Observable;
 
-import static ru.touchin.templates.validation.ValidationState.VALID;
-
 /**
  * Created by Ilia Kurtov on 24/01/2017.
  * Class that simplifies work with {@link Validator}'s that have the same wrapper model and model type.
@@ -40,7 +38,7 @@ public class SameTypeValidator<TModel extends Serializable> extends Validator<TM
     @NonNull
     @Override
     public Observable<HalfNullablePair<ValidationState, TModel>> fullValidateAndGetModel(@NonNull final TModel wrapperModel) {
-        return Observable.just(new HalfNullablePair<>(VALID, wrapperModel));
+        return Observable.just(new HalfNullablePair<>(ValidationState.VALID, wrapperModel));
     }
 
 }