diff --git a/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementImpl.java b/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementImpl.java
index 8431aae..af8691b 100644
--- a/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementImpl.java
+++ b/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementImpl.java
@@ -152,7 +152,7 @@ private void setBind(int parameterIndex, ClickHousePreparedStatementParameter pa
     }
 
     private void setNull(int parameterIndex) {
-        setBind(parameterIndex, ClickHousePreparedStatementParameter.nullParameter());
+        setBind(parameterIndex, ClickHousePreparedStatementParameter.NULL_PARAM);
     }
 
     @Override
@@ -215,10 +215,8 @@ public void setBytes(int parameterIndex, byte[] x) throws SQLException {
     @Override
     public void setDate(int parameterIndex, Date x) throws SQLException {
         if (x != null) {
-            setBind(
-                    parameterIndex,
-                    ClickHouseValueFormatter.formatDate(x, dateTimeZone),
-                    true);
+            String bind = ClickHouseValueFormatter.formatDate(x, dateTimeZone);
+            setBind(parameterIndex, bind, true);
         } else {
             setNull(parameterIndex);
         }
@@ -227,10 +225,8 @@ public void setDate(int parameterIndex, Date x) throws SQLException {
     @Override
     public void setTime(int parameterIndex, Time x) throws SQLException {
         if (x != null) {
-            setBind(
-                    parameterIndex,
-                    ClickHouseValueFormatter.formatTime(x, dateTimeTimeZone),
-                    true);
+            String bind = ClickHouseValueFormatter.formatTime(x, dateTimeTimeZone);
+            setBind(parameterIndex, bind, true);
         } else {
             setNull(parameterIndex);
         }
@@ -239,10 +235,8 @@ public void setTime(int parameterIndex, Time x) throws SQLException {
     @Override
     public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
         if (x != null) {
-            setBind(
-                    parameterIndex,
-                    ClickHouseValueFormatter.formatTimestamp(x, dateTimeTimeZone),
-                    true);
+            String bind = ClickHouseValueFormatter.formatTimestamp(x, dateTimeTimeZone);
+            setBind(parameterIndex, bind, true);
         } else {
             setNull(parameterIndex);
         }
@@ -291,10 +285,10 @@ public void setArray(int parameterIndex, Array x) throws SQLException {
     @Override
     public void setObject(int parameterIndex, Object x) throws SQLException {
         if (x != null) {
-            setBind(
-                    parameterIndex,
-                    ClickHousePreparedStatementParameter.fromObject(
-                            x, dateTimeZone, dateTimeTimeZone));
+            String bind = ClickHouseValueFormatter.formatObject(x, dateTimeZone, dateTimeTimeZone);
+            boolean needQuoting = ClickHouseValueFormatter.needsQuoting(x);
+            ClickHousePreparedStatementParameter bindParam = new ClickHousePreparedStatementParameter(bind,needQuoting);
+            setBind(parameterIndex, bindParam);
         } else {
             setNull(parameterIndex);
         }
diff --git a/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameter.java b/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameter.java
index a73c226..c99091b 100644
--- a/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameter.java
+++ b/src/main/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameter.java
@@ -2,11 +2,9 @@
 
 import cc.blynk.clickhouse.util.ClickHouseValueFormatter;
 
-import java.util.TimeZone;
-
 public final class ClickHousePreparedStatementParameter {
 
-    private static final ClickHousePreparedStatementParameter NULL_PARAM =
+    static final ClickHousePreparedStatementParameter NULL_PARAM =
         new ClickHousePreparedStatementParameter(null, false);
 
     static final ClickHousePreparedStatementParameter TRUE_PARAM =
@@ -18,20 +16,6 @@ public final class ClickHousePreparedStatementParameter {
     private final String stringValue;
     private final boolean quoteNeeded;
 
-    static ClickHousePreparedStatementParameter fromObject(Object x,
-        TimeZone dateTimeZone, TimeZone dateTimeTimeZone) {
-        if (x == null) {
-            return NULL_PARAM;
-        }
-        return new ClickHousePreparedStatementParameter(
-            ClickHouseValueFormatter.formatObject(x, dateTimeZone, dateTimeTimeZone),
-            ClickHouseValueFormatter.needsQuoting(x));
-    }
-
-    static ClickHousePreparedStatementParameter nullParameter() {
-        return NULL_PARAM;
-    }
-
     ClickHousePreparedStatementParameter(String stringValue, boolean quoteNeeded) {
         this.stringValue = stringValue == null
             ? ClickHouseValueFormatter.NULL_MARKER
diff --git a/src/test/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameterTest.java b/src/test/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameterTest.java
index beefd70..8e40741 100644
--- a/src/test/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameterTest.java
+++ b/src/test/java/cc/blynk/clickhouse/ClickHousePreparedStatementParameterTest.java
@@ -10,12 +10,12 @@ public class ClickHousePreparedStatementParameterTest {
     @Test
     public void testNullParam() {
         ClickHousePreparedStatementParameter p0 =
-                ClickHousePreparedStatementParameter.nullParameter();
+                ClickHousePreparedStatementParameter.NULL_PARAM;
         assertEquals(p0.getRegularValue(), "null");
         assertEquals(p0.getBatchValue(), "\\N");
 
         ClickHousePreparedStatementParameter p1 =
-                ClickHousePreparedStatementParameter.nullParameter();
+                ClickHousePreparedStatementParameter.NULL_PARAM;
         assertEquals(p1, p0);
         assertSame(p1, p0);
     }