diff --git a/Classes/PHPExcel/Calculation/TextData.php b/Classes/PHPExcel/Calculation/TextData.php
index 7a52d2e..148a5b7 100644
--- a/Classes/PHPExcel/Calculation/TextData.php
+++ b/Classes/PHPExcel/Calculation/TextData.php
@@ -118,13 +118,12 @@ class PHPExcel_Calculation_TextData {
 	 */
 	public static function TRIMSPACES($stringValue = '') {
 		$stringValue	= PHPExcel_Calculation_Functions::flattenSingleValue($stringValue);
-
 		if (is_bool($stringValue)) {
 			return ($stringValue) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();
 		}
 
 		if (is_string($stringValue) || is_numeric($stringValue)) {
-			return trim(preg_replace('/ +/',' ',trim($stringValue,' ')));
+			return trim(preg_replace('/ +/',' ',trim($stringValue, ' ')), ' ');
 		}
 		return NULL;
 	}	//	function TRIMSPACES()
diff --git a/unitTests/rawTestData/Calculation/TextData/TRIM.data b/unitTests/rawTestData/Calculation/TextData/TRIM.data
index ea1bd05..ea80096 100644
--- a/unitTests/rawTestData/Calculation/TextData/TRIM.data
+++ b/unitTests/rawTestData/Calculation/TextData/TRIM.data
@@ -1,6 +1,6 @@
 "HELLO    ",		"HELLO"
 "    HELLO",		"HELLO"
-"      HELLO      ",	"HELLO"
+"   HELLO      ",	"HELLO"
 "	HELLO",		"	HELLO"
 "HELLO    WORLD",	"HELLO WORLD"
 TRUE,			"TRUE"