diff --git a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
index 5008c3d76..a23217b19 100644
--- a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
+++ b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
@@ -9195,7 +9195,11 @@ AlterExpression AlterExpression():
                 LOOKAHEAD(2) (<K_PRIMARY> <K_KEY> columnNames=ColumnsNamesList() { alterExp.setPkColumns(columnNames); })
 
                 constraints=AlterExpressionConstraintState() { alterExp.setConstraints(constraints); }
-                [<K_USING> sk4=RelObjectName() { alterExp.addParameters("USING", sk4); }]
+                [
+                    <K_USING> { alterExp.addParameters("USING"); }
+                    [ <K_INDEX> { alterExp.addParameters("INDEX"); } ]
+                    sk4=RelObjectName() { alterExp.addParameters(sk4); }
+                ]
                 |
                 LOOKAHEAD(2) (
                   (tk=<K_KEY> { alterExp.setUk(true); } | tk=<K_INDEX>)
@@ -9324,7 +9328,11 @@ AlterExpression AlterExpression():
                 |
                 ( <K_UNIQUE> ((<K_KEY> { alterExp.setUk(true); } | <K_INDEX>) (tk=<S_IDENTIFIER> | tk=<S_QUOTED_IDENTIFIER>) { alterExp.setUkName(tk.image); } )?
                     columnNames=ColumnsNamesList() { alterExp.setUkColumns(columnNames); }
-                    [ <K_USING> sk4=RelObjectName() { alterExp.addParameters("USING", sk4); }]
+                    [
+                        <K_USING> { alterExp.addParameters("USING"); }
+                        [ <K_INDEX> { alterExp.addParameters("INDEX"); } ]
+                        sk4=RelObjectName() { alterExp.addParameters(sk4); }
+                    ]
                     [ LOOKAHEAD(2) index = IndexWithComment(index) { alterExp.setIndex(index); } ]
                 )
                 |
@@ -9414,7 +9422,11 @@ AlterExpression AlterExpression():
                                     alterExp.setIndex(index);
                                 }
                                 constraints=AlterExpressionConstraintState() { alterExp.setConstraints(constraints); }
-                                [ <K_USING> sk4=RelObjectName() { alterExp.addParameters("USING", sk4); }]
+                                [
+                                    <K_USING> { alterExp.addParameters("USING"); }
+                                    [ <K_INDEX> { alterExp.addParameters("INDEX"); } ]
+                                    sk4=RelObjectName() { alterExp.addParameters(sk4); }
+                                ]
                                 [ LOOKAHEAD(2) index = IndexWithComment(index) { alterExp.setIndex(index); } ]
                             )
                             |
@@ -9446,7 +9458,11 @@ AlterExpression AlterExpression():
                                       alterExp.setIndex(index);
                                   }
                                   constraints=AlterExpressionConstraintState() { alterExp.setConstraints(constraints); }
-                                  [ <K_USING> sk4=RelObjectName() { alterExp.addParameters("USING", sk4); }]
+                                  [
+                                      <K_USING> { alterExp.addParameters("USING"); }
+                                      [ <K_INDEX> { alterExp.addParameters("INDEX"); } ]
+                                      sk4=RelObjectName() { alterExp.addParameters(sk4); }
+                                  ]
                                   [ LOOKAHEAD(2) index = IndexWithComment(index) { alterExp.setIndex(index); } ]
                             )
                             |
diff --git a/src/test/java/net/sf/jsqlparser/statement/alter/AlterTest.java b/src/test/java/net/sf/jsqlparser/statement/alter/AlterTest.java
index 749e12853..5d9975033 100644
--- a/src/test/java/net/sf/jsqlparser/statement/alter/AlterTest.java
+++ b/src/test/java/net/sf/jsqlparser/statement/alter/AlterTest.java
@@ -9,22 +9,21 @@
  */
 package net.sf.jsqlparser.statement.alter;
 
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.stream.Stream;
-
+import static net.sf.jsqlparser.test.TestUtils.assertDeparse;
+import static net.sf.jsqlparser.test.TestUtils.assertEqualsObjectTree;
+import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed;
+import static net.sf.jsqlparser.test.TestUtils.assertStatementCanBeDeparsedAs;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertFalse;
 import static org.junit.jupiter.api.Assertions.assertInstanceOf;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.assertTrue;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.params.provider.Arguments;
-import org.junit.jupiter.params.provider.MethodSource;
 
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Stream;
 import net.sf.jsqlparser.JSQLParserException;
 import net.sf.jsqlparser.expression.StringValue;
 import net.sf.jsqlparser.expression.operators.relational.NotEqualsTo;
@@ -43,10 +42,10 @@
 import net.sf.jsqlparser.statement.create.table.Index.ColumnParams;
 import net.sf.jsqlparser.statement.create.table.NamedConstraint;
 import net.sf.jsqlparser.statement.create.table.PartitionDefinition;
-import static net.sf.jsqlparser.test.TestUtils.assertDeparse;
-import static net.sf.jsqlparser.test.TestUtils.assertEqualsObjectTree;
-import static net.sf.jsqlparser.test.TestUtils.assertSqlCanBeParsedAndDeparsed;
-import static net.sf.jsqlparser.test.TestUtils.assertStatementCanBeDeparsedAs;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.params.ParameterizedTest;
+import org.junit.jupiter.params.provider.Arguments;
+import org.junit.jupiter.params.provider.MethodSource;
 
 public class AlterTest {
 
@@ -2234,4 +2233,26 @@ public void testAlterTableAddIndexInvisible() throws JSQLParserException {
 
         assertSqlCanBeParsedAndDeparsed(sql);
     }
+
+    @Test
+    public void testAlterTableAddConstraintPrimaryKeyUsingIndexName() throws JSQLParserException {
+        String sql =
+                "ALTER TABLE TNWAV ADD CONSTRAINT PK_TNWAV PRIMARY KEY (NWNAME, ZEILE, BESTGRU) USING INDEX PK_TNWAV";
+        Statement stmt = CCJSqlParserUtil.parse(sql);
+        assertInstanceOf(Alter.class, stmt);
+
+        Alter alter = (Alter) stmt;
+        assertEquals("TNWAV", alter.getTable().getFullyQualifiedName());
+
+        List<AlterExpression> alterExpressions = alter.getAlterExpressions();
+        assertNotNull(alterExpressions);
+        assertEquals(1, alterExpressions.size());
+
+        AlterExpression alterExp = alterExpressions.get(0);
+        assertEquals(AlterOperation.ADD, alterExp.getOperation());
+        assertNotNull(alterExp.getIndex());
+        assertEquals(Arrays.asList("USING", "INDEX", "PK_TNWAV"), alterExp.getParameters());
+
+        assertSqlCanBeParsedAndDeparsed(sql);
+    }
 }