diff --git a/resources/views/v1/javascript/variables.twig b/resources/views/v1/javascript/variables.twig
index e4a52c6ee7..2efd9f9125 100644
--- a/resources/views/v1/javascript/variables.twig
+++ b/resources/views/v1/javascript/variables.twig
@@ -32,7 +32,7 @@ var currencyCode = '{{ currencyCode|escape('js') }}';
 var currencySymbol = '{{ currencySymbol|escape('js') }}';
 var mon_decimal_point = "{{ accountingLocaleInfo.mon_decimal_point|escape('js') }}";
 var mon_thousands_sep = "{{ accountingLocaleInfo.mon_thousands_sep|escape('js') }}";
-var frac_digits = {{ accountingLocaleInfo.frac_digits|default(0) }};
+var frac_digits = {{ accountingLocaleInfo.frac_digits|default('0') }};
 var noDataForChart = '{{ trans('firefly.no_data_for_chart')|escape('js') }}';
 var showFullList = '{{ trans('firefly.show_full_list')|escape('js') }}';
 var showOnlyTop = '{{ trans('firefly.show_only_top',{number:listLength})|escape('js') }}';