diff --git a/poi/src/main/java/org/apache/poi/ss/formula/FormulaParser.java b/poi/src/main/java/org/apache/poi/ss/formula/FormulaParser.java
index 31649a5d85..47a4b33404 100644
--- a/poi/src/main/java/org/apache/poi/ss/formula/FormulaParser.java
+++ b/poi/src/main/java/org/apache/poi/ss/formula/FormulaParser.java
@@ -413,7 +413,9 @@ public final class FormulaParser {
         if (tkn instanceof AbstractFunctionPtg) {
             AbstractFunctionPtg afp = (AbstractFunctionPtg) tkn;
             byte returnClass = afp.getDefaultOperandClass();
-            return Ptg.CLASS_REF == returnClass;
+            //CLASS_VALUE was added as valid to support example 6 in
+            //https://support.microsoft.com/en-us/office/xlookup-function-b7fd680e-6d10-43e6-84f9-88eae8bf5929
+            return Ptg.CLASS_REF == returnClass || Ptg.CLASS_VALUE == returnClass;
         }
         if (tkn instanceof ValueOperatorPtg) {
             return false;
diff --git a/poi/src/test/java/org/apache/poi/ss/formula/atp/TestXLookupFunction.java b/poi/src/test/java/org/apache/poi/ss/formula/atp/TestXLookupFunction.java
index ced480a227..1e32802bc9 100644
--- a/poi/src/test/java/org/apache/poi/ss/formula/atp/TestXLookupFunction.java
+++ b/poi/src/test/java/org/apache/poi/ss/formula/atp/TestXLookupFunction.java
@@ -149,8 +149,7 @@ public class TestXLookupFunction {
             HSSFCell cell = wb.getSheetAt(0).getRow(2).createCell(3);
             assertDouble(fe, cell, "XLOOKUP(B3,B6:B10,E6:E10)", 75.28);
             assertDouble(fe, cell, "XLOOKUP(C3,B6:B10,E6:E10)", 17.25);
-            //TODO next to fix FormulaParser to get this to work
-            //assertDouble(fe, cell, "SUM(XLOOKUP(B3,B6:B10,E6:E10):XLOOKUP(C3,B6:B10,E6:E10))", 110.70);
+            assertDouble(fe, cell, "SUM(XLOOKUP(B3,B6:B10,E6:E10):XLOOKUP(C3,B6:B10,E6:E10))", 110.69);
         }
     }