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-rw-r--r--lib/axlsx/workbook/worksheet/pivot_table.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/axlsx/workbook/worksheet/pivot_table.rb b/lib/axlsx/workbook/worksheet/pivot_table.rb
index a75842cd..aca3ccb5 100644
--- a/lib/axlsx/workbook/worksheet/pivot_table.rb
+++ b/lib/axlsx/workbook/worksheet/pivot_table.rb
@@ -245,7 +245,7 @@ module Axlsx
str << "<dataFields count=\"#{data.size}\">"
data.each do |datum_value|
# The correct name prefix in ["Sum","Average", etc...]
- str << "<dataField name='#{(datum_value[:subtotal] || '')} of #{datum_value[:ref]}' fld='#{header_index_of(datum_value[:ref])}' baseField='0' baseItem='0'"
+ str << "<dataField name='#{datum_value[:subtotal] || ''} of #{datum_value[:ref]}' fld='#{header_index_of(datum_value[:ref])}' baseField='0' baseItem='0'"
str << " numFmtId='#{datum_value[:num_fmt]}'" if datum_value[:num_fmt]
str << " subtotal='#{datum_value[:subtotal]}' " if datum_value[:subtotal]
str << "/>"