diff --git a/conservancy_beancount/reports/core.py b/conservancy_beancount/reports/core.py
index 21ed4fa..985c85f 100644
--- a/conservancy_beancount/reports/core.py
+++ b/conservancy_beancount/reports/core.py
@@ -755,13 +755,6 @@ class BaseODS(BaseSpreadsheet[RT, ST], metaclass=abc.ABCMeta):
             grouping = pattern.grouping[0]
         else:
             grouping = pattern.grouping[fmt_index]
-        zero_s = babel.numbers.format_currency(0, code, '##0.0', locale)
-        try:
-            decimal_index = zero_s.rindex('.') + 1
-        except ValueError:
-            decimalplaces = 0
-        else:
-            decimalplaces = len(zero_s) - decimal_index
         style = self.replace_child(
             root,
             odf.number.CurrencyStyle,
@@ -775,7 +768,7 @@ class BaseODS(BaseSpreadsheet[RT, ST], metaclass=abc.ABCMeta):
                 pass
             elif not part.strip('#0,.'):
                 style.addElement(odf.number.Number(
-                    decimalplaces=str(decimalplaces),
+                    decimalplaces=str(pattern.frac_prec[0]),
                     grouping='true' if grouping else 'false',
                     minintegerdigits=str(minintegerdigits),
                 ))