diff --git a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFBugs.java b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFBugs.java
index 658d03e50..d7f4af1e8 100644
--- a/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFBugs.java
+++ b/src/ooxml/testcases/org/apache/poi/xssf/usermodel/TestXSSFBugs.java
@@ -18,7 +18,13 @@
 package org.apache.poi.xssf.usermodel;
 
 import static org.hamcrest.core.IsEqual.equalTo;
-import static org.junit.Assert.*;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.fail;
 
 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
@@ -46,7 +52,26 @@ import org.apache.poi.ss.formula.eval.ErrorEval;
 import org.apache.poi.ss.formula.eval.NumberEval;
 import org.apache.poi.ss.formula.eval.ValueEval;
 import org.apache.poi.ss.formula.functions.Function;
-import org.apache.poi.ss.usermodel.*;
+import org.apache.poi.ss.usermodel.BaseTestBugzillaIssues;
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.CellStyle;
+import org.apache.poi.ss.usermodel.CellValue;
+import org.apache.poi.ss.usermodel.ClientAnchor;
+import org.apache.poi.ss.usermodel.Comment;
+import org.apache.poi.ss.usermodel.CreationHelper;
+import org.apache.poi.ss.usermodel.DataFormatter;
+import org.apache.poi.ss.usermodel.DateUtil;
+import org.apache.poi.ss.usermodel.Drawing;
+import org.apache.poi.ss.usermodel.Font;
+import org.apache.poi.ss.usermodel.FormulaError;
+import org.apache.poi.ss.usermodel.FormulaEvaluator;
+import org.apache.poi.ss.usermodel.Hyperlink;
+import org.apache.poi.ss.usermodel.IndexedColors;
+import org.apache.poi.ss.usermodel.Name;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.ss.usermodel.Sheet;
+import org.apache.poi.ss.usermodel.Workbook;
+import org.apache.poi.ss.usermodel.WorkbookFactory;
 import org.apache.poi.ss.util.AreaReference;
 import org.apache.poi.ss.util.CellRangeAddress;
 import org.apache.poi.ss.util.CellReference;
@@ -60,6 +85,8 @@ import org.apache.poi.xssf.usermodel.extensions.XSSFCellFill;
 import org.junit.Ignore;
 import org.junit.Test;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCols;
+import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTDefinedName;
+import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTDefinedNames;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTWorksheet;
 import org.openxmlformats.schemas.spreadsheetml.x2006.main.impl.CTFontImpl;
 
@@ -1860,6 +1887,22 @@ public final class TestXSSFBugs extends BaseTestBugzillaIssues {
         assertEquals(3, wb.getNumberOfSheets());
     }
     
+    /**
+     * CTDefinedNamesImpl should be included in the smaller
+     *  poi-ooxml-schemas jar
+     */
+    @Test
+    public void bug57176() throws Exception {
+        XSSFWorkbook wb = XSSFTestDataSamples.openSampleWorkbook("57176.xlsx");
+        CTDefinedNames definedNames = wb.getCTWorkbook().getDefinedNames();
+        List<CTDefinedName> definedNameList = definedNames.getDefinedNameList();
+        for (CTDefinedName defName : definedNameList) {
+            assertNotNull(defName.getName());
+            assertNotNull(defName.getStringValue());
+        }
+        assertEquals("TestDefinedName", definedNameList.get(0).getName());
+    }
+    
     /**
      * .xlsb files are not supported, but we should generate a helpful
      *  error message if given one
diff --git a/test-data/spreadsheet/57176.xlsx b/test-data/spreadsheet/57176.xlsx
new file mode 100644
index 000000000..cd7dd84cc
Binary files /dev/null and b/test-data/spreadsheet/57176.xlsx differ