diff --git a/src/java/org/apache/poi/ss/formula/udf/AggregatingUDFFinder.java b/src/java/org/apache/poi/ss/formula/udf/AggregatingUDFFinder.java
index 7fdfdd16c..a2cc21421 100644
--- a/src/java/org/apache/poi/ss/formula/udf/AggregatingUDFFinder.java
+++ b/src/java/org/apache/poi/ss/formula/udf/AggregatingUDFFinder.java
@@ -6,7 +6,7 @@
    (the "License"); you may not use this file except in compliance with
    the License.  You may obtain a copy of the License at
 
-	   http://www.apache.org/licenses/LICENSE-2.0
+       http://www.apache.org/licenses/LICENSE-2.0
 
    Unless required by applicable law or agreed to in writing, software
    distributed under the License is distributed on an "AS IS" BASIS,
@@ -30,30 +30,30 @@ import java.util.Collection;
  */
 public class AggregatingUDFFinder implements UDFFinder {
 
-	private final Collection<UDFFinder> _usedToolPacks;
+    private final Collection<UDFFinder> _usedToolPacks;
 
-	public AggregatingUDFFinder(UDFFinder ... usedToolPacks) {
+    public AggregatingUDFFinder(UDFFinder ... usedToolPacks) {
         _usedToolPacks = new ArrayList<UDFFinder>(usedToolPacks.length);
-		_usedToolPacks.addAll(Arrays.asList(usedToolPacks));
-	}
+        _usedToolPacks.addAll(Arrays.asList(usedToolPacks));
+    }
 
-	/**
-	 * Returns executor by specified name. Returns <code>null</code> if
-	 * function isn't contained by any registered tool pack.
-	 *
-	 * @param name Name of function.
-	 * @return Function executor. <code>null</code> if not found
-	 */
-	public FreeRefFunction findFunction(String name) {
-		FreeRefFunction evaluatorForFunction;
-		for (UDFFinder pack : _usedToolPacks) {
-			evaluatorForFunction = pack.findFunction(name);
-			if (evaluatorForFunction != null) {
-				return evaluatorForFunction;
-			}
-		}
-		return null;
-	}
+    /**
+     * Returns executor by specified name. Returns <code>null</code> if
+     * function isn't contained by any registered tool pack.
+     *
+     * @param name Name of function.
+     * @return Function executor. <code>null</code> if not found
+     */
+    public FreeRefFunction findFunction(String name) {
+        FreeRefFunction evaluatorForFunction;
+        for (UDFFinder pack : _usedToolPacks) {
+            evaluatorForFunction = pack.findFunction(name);
+            if (evaluatorForFunction != null) {
+                return evaluatorForFunction;
+            }
+        }
+        return null;
+    }
 
     /**
      * Add a new toolpack