diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/CalcEngine/Functions/Text.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/CalcEngine/Functions/Text.cs
index 993e776..4bec9d0 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/CalcEngine/Functions/Text.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/CalcEngine/Functions/Text.cs
@@ -180,7 +180,9 @@
         }
         static object Trim(List<Expression> p)
         {
-            return ((string)p[0]).Trim();
+            //Should not trim non breaking space
+            //See http://office.microsoft.com/en-us/excel-help/trim-function-HP010062581.aspx
+            return ((string)p[0]).Trim(' ');
         }
         static object Upper(List<Expression> p)
         {
diff --git a/ClosedXML/ClosedXML/ClosedXML_Tests/Excel/CalcEngine/FunctionsTests.cs b/ClosedXML/ClosedXML/ClosedXML_Tests/Excel/CalcEngine/FunctionsTests.cs
index b535017..92cd714 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Tests/Excel/CalcEngine/FunctionsTests.cs
+++ b/ClosedXML/ClosedXML/ClosedXML_Tests/Excel/CalcEngine/FunctionsTests.cs
@@ -586,5 +586,15 @@
             object r = ws.Cell("C1").Value;
             Assert.AreEqual("The total value is: 4", r.ToString());
         }
+
+        [Test]
+        public void Trim()
+        {
+            Assert.AreEqual("Test", XLWorkbook.EvaluateExpr("Trim(\"Test    \")"));
+
+            //Should not trim non breaking space
+            //See http://office.microsoft.com/en-us/excel-help/trim-function-HP010062581.aspx
+            Assert.AreEqual("Test\u00A0", XLWorkbook.EvaluateExpr("Trim(\"Test\u00A0 \")"));
+        }
     }
 }
\ No newline at end of file