diff --git a/lib/constants.dart b/lib/constants.dart
index bc1d78b7a..b6a21a635 100644
--- a/lib/constants.dart
+++ b/lib/constants.dart
@@ -245,6 +245,10 @@ const String kDefaultCurrencyId = '1';
 const String kDefaultDateFormat = '5';
 const String kDefaultAccentColor = '#0091EA';
 
+const String kReportGroupDay = 'day';
+const String kReportGroupMonth = 'month';
+const String kReportGroupYear = 'year';
+
 const String kActivityEmailInvoice = '6';
 
 const int kModuleRecurringInvoice = 1;
diff --git a/lib/ui/reports/reports_screen.dart b/lib/ui/reports/reports_screen.dart
index a08103538..bc9a70bbe 100644
--- a/lib/ui/reports/reports_screen.dart
+++ b/lib/ui/reports/reports_screen.dart
@@ -132,7 +132,7 @@ class ReportsScreen extends StatelessWidget {
                 ),
                 if (getReportColumnType(reportsUIState.group) ==
                     ReportColumnType.dateTime)
-                  AppDropdownButton<ReportSubgroup>(
+                  AppDropdownButton<String>(
                       labelText: localization.subgroup,
                       value: reportsUIState.subgroup,
                       blankValue: '',
@@ -144,15 +144,15 @@ class ReportsScreen extends StatelessWidget {
                       items: [
                         DropdownMenuItem(
                           child: Text(localization.day),
-                          value: ReportSubgroup.day,
+                          value: kReportGroupDay,
                         ),
                         DropdownMenuItem(
                           child: Text(localization.month),
-                          value: ReportSubgroup.month,
+                          value: kReportGroupMonth,
                         ),
                         DropdownMenuItem(
                           child: Text(localization.year),
-                          value: ReportSubgroup.year,
+                          value: kReportGroupYear,
                         ),
                       ]),
                 if (hasCustomDate) ...[
@@ -308,12 +308,6 @@ enum ReportColumnType {
   bool,
 }
 
-enum ReportSubgroup {
-  day,
-  month,
-  year,
-}
-
 ReportColumnType getReportColumnType(String column) {
   if (['updated_at', 'created_at'].contains(column)) {
     return ReportColumnType.dateTime;