diff --git a/src/main/java/net/sf/jsqlparser/statement/merge/MergeUpdate.java b/src/main/java/net/sf/jsqlparser/statement/merge/MergeUpdate.java
index 10df947e7..38e9261a2 100644
--- a/src/main/java/net/sf/jsqlparser/statement/merge/MergeUpdate.java
+++ b/src/main/java/net/sf/jsqlparser/statement/merge/MergeUpdate.java
@@ -22,8 +22,7 @@ public class MergeUpdate implements Serializable {
     private Expression whereCondition;
     private Expression deleteWhereCondition;
 
-    public MergeUpdate() {
-    }
+    public MergeUpdate() {}
 
     public MergeUpdate(List<UpdateSet> updateSets) {
         this.updateSets = updateSets;
@@ -98,7 +97,7 @@ public MergeUpdate withDeleteWhereCondition(Expression deleteWhereCondition) {
 
     public <E extends Expression> E getAndPredicate(Class<E> type) {
         return type.cast(getAndPredicate());
-}
+    }
 
     public <E extends Expression> E getWhereCondition(Class<E> type) {
         return type.cast(getWhereCondition());
diff --git a/src/main/java/net/sf/jsqlparser/statement/update/UpdateSet.java b/src/main/java/net/sf/jsqlparser/statement/update/UpdateSet.java
index 7c6fca540..84299c0fb 100644
--- a/src/main/java/net/sf/jsqlparser/statement/update/UpdateSet.java
+++ b/src/main/java/net/sf/jsqlparser/statement/update/UpdateSet.java
@@ -72,7 +72,7 @@ public void add(Column column, Expression value) {
      * @param column
      */
     public void add(Column column) {
-        if (columns.size() < 2 && !(columns instanceof ParenthesedExpressionList)) {
+        if (!columns.isEmpty() && !(columns instanceof ParenthesedExpressionList)) {
             columns = new ParenthesedExpressionList<>(columns);
         }
         columns.add(column);
@@ -85,7 +85,7 @@ public void add(Column column) {
      * @param expression
      */
     public void add(Expression expression) {
-        if (values.size() < 2 && !(values instanceof ParenthesedExpressionList)) {
+        if (!values.isEmpty() && !(values instanceof ParenthesedExpressionList)) {
             values = new ParenthesedExpressionList<>(values);
         }
         values.add(expression);
diff --git a/src/test/java/net/sf/jsqlparser/statement/merge/MergeTest.java b/src/test/java/net/sf/jsqlparser/statement/merge/MergeTest.java
index 5034be8cd..edf0baa92 100644
--- a/src/test/java/net/sf/jsqlparser/statement/merge/MergeTest.java
+++ b/src/test/java/net/sf/jsqlparser/statement/merge/MergeTest.java
@@ -257,9 +257,11 @@ public void testSnowflakeMergeStatementWithMatchedAndPredicate() throws JSQLPars
 
     @Test
     void testSnowflakeMergeStatementWithNotMatchedAndPredicate() throws JSQLParserException {
-        String sql = "MERGE INTO target USING (select k, max(v) as v from src group by k) AS b ON target.k = b.k\n" +
-                "  WHEN MATCHED THEN UPDATE SET target.v = b.v\n" +
-                "  WHEN NOT MATCHED AND b.v != 11 THEN INSERT (k, v) VALUES (b.k, b.v)";
+        String sql =
+                "MERGE INTO target USING (select k, max(v) as v from src group by k) AS b ON target.k = b.k\n"
+                        +
+                        "  WHEN MATCHED THEN UPDATE SET target.v = b.v\n" +
+                        "  WHEN NOT MATCHED AND b.v != 11 THEN INSERT (k, v) VALUES (b.k, b.v)";
 
         assertSqlCanBeParsedAndDeparsed(sql, true);
     }
diff --git a/src/test/java/net/sf/jsqlparser/statement/update/UpdateTest.java b/src/test/java/net/sf/jsqlparser/statement/update/UpdateTest.java
index 00de44dc2..342d1eea6 100644
--- a/src/test/java/net/sf/jsqlparser/statement/update/UpdateTest.java
+++ b/src/test/java/net/sf/jsqlparser/statement/update/UpdateTest.java
@@ -18,6 +18,8 @@
 import net.sf.jsqlparser.parser.CCJSqlParserManager;
 import net.sf.jsqlparser.parser.CCJSqlParserUtil;
 import net.sf.jsqlparser.schema.Column;
+import net.sf.jsqlparser.schema.Table;
+import net.sf.jsqlparser.test.TestUtils;
 import org.junit.jupiter.api.Test;
 
 import java.io.StringReader;
@@ -362,4 +364,20 @@ void testArrayColumnsIssue1083() throws JSQLParserException {
         sqlStr = "update utilisateur set listes[0:3] = (1,2,3,4)";
         assertSqlCanBeParsedAndDeparsed(sqlStr, true);
     }
+
+    @Test
+    void testIssue1910() throws JSQLParserException {
+        Update update = new Update();
+        update.setTable(new Table("sys_dept"));
+
+        UpdateSet updateSet = new UpdateSet(new Column("deleted"), new LongValue(1L));
+        update.addUpdateSet(updateSet);
+
+        TestUtils.assertStatementCanBeDeparsedAs(update, "UPDATE sys_dept SET deleted = 1", true);
+
+        updateSet.add(new Column("created"), new LongValue(2L));
+
+        TestUtils.assertStatementCanBeDeparsedAs(update,
+                "UPDATE sys_dept SET (deleted, created) = (1,2)", true);
+    }
 }
diff --git a/src/test/java/net/sf/jsqlparser/util/TablesNamesFinderTest.java b/src/test/java/net/sf/jsqlparser/util/TablesNamesFinderTest.java
index e08c5032c..1cf2b90be 100644
--- a/src/test/java/net/sf/jsqlparser/util/TablesNamesFinderTest.java
+++ b/src/test/java/net/sf/jsqlparser/util/TablesNamesFinderTest.java
@@ -490,10 +490,10 @@ public void testConnectedByRootOperator() throws JSQLParserException {
     void testJoinSubSelect() throws JSQLParserException {
         String sqlStr = "select * from A left join B on A.id=B.id and A.age = (select age from C)";
         Set<String> tableNames = TablesNamesFinder.findTables(sqlStr);
-        assertThat( tableNames ).containsExactlyInAnyOrder("A", "B", "C");
+        assertThat(tableNames).containsExactlyInAnyOrder("A", "B", "C");
 
         String exprStr = "A.id=B.id and A.age = (select age from C)";
         tableNames = TablesNamesFinder.findTablesInExpression(exprStr);
-        assertThat( tableNames ).containsExactlyInAnyOrder("A", "B", "C");
+        assertThat(tableNames).containsExactlyInAnyOrder("A", "B", "C");
     }
 }