diff --git a/ClosedXML/ClosedXML/ClosedXML/Excel/DataValidation/XLDataValidations.cs b/ClosedXML/ClosedXML/ClosedXML/Excel/DataValidation/XLDataValidations.cs
index 8fde067..e35857b 100644
--- a/ClosedXML/ClosedXML/ClosedXML/Excel/DataValidation/XLDataValidations.cs
+++ b/ClosedXML/ClosedXML/ClosedXML/Excel/DataValidation/XLDataValidations.cs
@@ -29,7 +29,14 @@
 
         public Boolean ContainsSingle(IXLRange range)
         {
-            return _dataValidations.Any(dv => dv.Ranges.Count == 1 && dv.Ranges.Contains(range));
+            Int32 count = 0;
+            foreach (var xlDataValidation in _dataValidations.Where(dv => dv.Ranges.Contains(range)))
+            {
+                count++;
+                if (count > 1) return false;
+            }
+
+            return count == 1;
         }
 
         #endregion
diff --git a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
index c00d8e1..6ad73db 100644
--- a/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
+++ b/ClosedXML/ClosedXML/ClosedXML_Tests/Resource/Examples/Misc/DataValidation.xlsx
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