I have a pivot table showing a count of items in a library. However, one of the library names (Well Drilling Operations) is shown as a single quote mark ` . If I change the library name in the source table the pivot table shows the correct result, but when I change the source back to the correct value the strange mark re-appears! I have reduced the number of characters in the original name (.. Operation) and increased it (..Operationss). Both are fine in the pivot - it is only the correct name that gets translated. Has anyone else seen this weird behaviour.