diff --git a/src/main/java/ru/yandex/metrika/clickhouse/CHDataSource.java b/src/main/java/ru/yandex/metrika/clickhouse/CHDataSource.java
index 4ea9550e6b1f833aa4946dfb132fbe5e059a3959..007d2a16a12ba4f4ef3a6ec8f73d74b59b677ebf 100644
--- a/src/main/java/ru/yandex/metrika/clickhouse/CHDataSource.java
+++ b/src/main/java/ru/yandex/metrika/clickhouse/CHDataSource.java
@@ -99,7 +99,6 @@ public class CHDataSource implements DataSource {
         return loginTimeout;
     }
 
-    @Override
     public Logger getParentLogger() throws SQLFeatureNotSupportedException {
         throw new SQLFeatureNotSupportedException();
     }
diff --git a/src/main/java/ru/yandex/metrika/clickhouse/CHDatabaseMetadata.java b/src/main/java/ru/yandex/metrika/clickhouse/CHDatabaseMetadata.java
index 67d2b9997d5e6bfb378c6a86c811fe735c95e2e0..880bf6e3639d5c430c851c6e8ddeb421fb90ad69 100644
--- a/src/main/java/ru/yandex/metrika/clickhouse/CHDatabaseMetadata.java
+++ b/src/main/java/ru/yandex/metrika/clickhouse/CHDatabaseMetadata.java
@@ -1227,12 +1227,10 @@ public class CHDatabaseMetadata implements DatabaseMetaData {
         return false;
     }
 
-    @Override
     public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
         return null;
     }
 
-    @Override
     public boolean generatedKeyAlwaysReturned() throws SQLException {
         return false;
     }
diff --git a/src/main/java/ru/yandex/metrika/clickhouse/CHDriver.java b/src/main/java/ru/yandex/metrika/clickhouse/CHDriver.java
index dc34991426e8ff2558b317c6d67b3393ebd6db93..48170a8fca881a041f2d22fedd5c11e6a3da8c88 100644
--- a/src/main/java/ru/yandex/metrika/clickhouse/CHDriver.java
+++ b/src/main/java/ru/yandex/metrika/clickhouse/CHDriver.java
@@ -63,7 +63,6 @@ public class CHDriver implements Driver {
         return false;
     }
 
-    @Override
     public java.util.logging.Logger getParentLogger() throws SQLFeatureNotSupportedException {
         throw new SQLFeatureNotSupportedException();
     }
diff --git a/src/main/java/ru/yandex/metrika/clickhouse/copypaste/CHResultSet.java b/src/main/java/ru/yandex/metrika/clickhouse/copypaste/CHResultSet.java
index 1d8d66434b6f602a2c7ad0229f1b1202b7470b72..6aeff1918877f5120a4b0370bfec9e4ca87f43ed 100644
--- a/src/main/java/ru/yandex/metrika/clickhouse/copypaste/CHResultSet.java
+++ b/src/main/java/ru/yandex/metrika/clickhouse/copypaste/CHResultSet.java
@@ -433,12 +433,10 @@ public class CHResultSet extends AbstractResultSet {
         };
     }
 
-    @Override
     public <T> T getObject(int columnIndex, Class<T> type) throws SQLException {
         throw new SQLException("Not implemented");
     }
 
-    @Override
     public <T> T getObject(String columnLabel, Class<T> type) throws SQLException {
         return getObject(asColNum(columnLabel), type);
     }