diff --git a/app/assets/javascripts/admin/components/admin-report.js b/app/assets/javascripts/admin/components/admin-report.js
index bacb6177e1d..e64e02f3ebb 100644
--- a/app/assets/javascripts/admin/components/admin-report.js
+++ b/app/assets/javascripts/admin/components/admin-report.js
@@ -226,14 +226,18 @@ export default Component.extend({
 
   @action
   exportCsv() {
-    const customFilters = this.get("filters.customFilters") || {};
-    exportEntity("report", {
+    const args = {
       name: this.get("model.type"),
       start_date: this.startDate.toISOString(true).split("T")[0],
-      end_date: this.endDate.toISOString(true).split("T")[0],
-      category_id: customFilters.category,
-      group_id: customFilters.group
-    }).then(outputExportResult);
+      end_date: this.endDate.toISOString(true).split("T")[0]
+    };
+
+    const customFilters = this.get("filters.customFilters");
+    if (customFilters) {
+      Object.assign(args, customFilters);
+    }
+
+    exportEntity("report", args).then(outputExportResult);
   },
 
   @action
diff --git a/app/controllers/export_csv_controller.rb b/app/controllers/export_csv_controller.rb
index 6ac04125512..19257357db4 100644
--- a/app/controllers/export_csv_controller.rb
+++ b/app/controllers/export_csv_controller.rb
@@ -18,7 +18,7 @@ class ExportCsvController < ApplicationController
   def export_params
     @_export_params ||= begin
       params.require(:entity)
-      params.permit(:entity, args: [:name, :start_date, :end_date, :category_id, :group_id, :trust_level]).to_h
+      params.permit(:entity, args: Report::FILTERS).to_h
     end
   end
 end
diff --git a/app/jobs/regular/export_csv_file.rb b/app/jobs/regular/export_csv_file.rb
index 7d9b00d1661..3a63c88ea16 100644
--- a/app/jobs/regular/export_csv_file.rb
+++ b/app/jobs/regular/export_csv_file.rb
@@ -215,12 +215,9 @@ module Jobs
       end
 
       @extra[:filters] = {}
-      if @extra[:category_id].present?
-        @extra[:filters][:category] = @extra[:category_id].to_i
-      end
-      if @extra[:group_id].present?
-        @extra[:filters][:group] = @extra[:group_id].to_i
-      end
+      @extra[:filters][:category] = @extra[:category].to_i if @extra[:category].present?
+      @extra[:filters][:group] = @extra[:group].to_i if @extra[:group].present?
+      @extra[:filters][:include_subcategories] = !!ActiveRecord::Type::Boolean.new.cast(@extra[:include_subcategories]) if @extra[:include_subcategories].present?
 
       report = Report.find(@extra[:name], @extra)
 
diff --git a/app/models/report.rb b/app/models/report.rb
index b66e36c7721..bf8d1c33135 100644
--- a/app/models/report.rb
+++ b/app/models/report.rb
@@ -5,6 +5,8 @@ class Report
   # and you want to ensure cache is reset
   SCHEMA_VERSION = 4
 
+  FILTERS = [:name, :start_date, :end_date, :category, :group, :trust_level, :file_extension, :include_subcategories]
+
   attr_accessor :type, :data, :total, :prev30Days, :start_date,
                 :end_date, :labels, :prev_period, :facets, :limit, :average,
                 :percent, :higher_is_better, :icon, :modes, :prev_data,
@@ -80,9 +82,9 @@ class Report
     add_filter('category', type: 'category', default: category_id)
     return if category_id.blank?
 
-    include_subcategories = filters[:'include-subcategories']
+    include_subcategories = filters[:include_subcategories]
     include_subcategories = !!ActiveRecord::Type::Boolean.new.cast(include_subcategories)
-    add_filter('include-subcategories', type: 'bool', default: include_subcategories)
+    add_filter('include_subcategories', type: 'bool', default: include_subcategories)
 
     [category_id, include_subcategories]
   end
diff --git a/app/models/reports/top_uploads.rb b/app/models/reports/top_uploads.rb
index e5a4f542cfa..f410fd4c6d4 100644
--- a/app/models/reports/top_uploads.rb
+++ b/app/models/reports/top_uploads.rb
@@ -3,8 +3,8 @@
 Report.add_report('top_uploads') do |report|
   report.modes = [:table]
 
-  extension_filter = report.filters.dig(:"file-extension")
-  report.add_filter('file-extension',
+  extension_filter = report.filters.dig(:file_extension)
+  report.add_filter('file_extension',
     type: 'list',
     default: extension_filter || 'any',
     choices: (SiteSetting.authorized_extensions.split('|') + Array(extension_filter)).uniq
diff --git a/config/locales/client.en.yml b/config/locales/client.en.yml
index 1dc4865929e..2de77fce976 100644
--- a/config/locales/client.en.yml
+++ b/config/locales/client.en.yml
@@ -3458,13 +3458,13 @@ en:
             more: '<a href="%{basePath}/admin/logs/search_logs">Search logs</a>'
             disabled: 'Trending search report is disabled. Enable <a href="%{basePath}/admin/site_settings/category/all_results?filter=log%20search%20queries">log search queries</a> to collect data.'
           filters:
-            file-extension:
+            file_extension:
               label: File extension
             group:
               label: Group
             category:
               label: Category
-            include-subcategories:
+            include_subcategories:
               label: "Include Subcategories"
 
       commits:
diff --git a/spec/jobs/export_csv_file_spec.rb b/spec/jobs/export_csv_file_spec.rb
index a29bae2549f..45ab2520cb0 100644
--- a/spec/jobs/export_csv_file_spec.rb
+++ b/spec/jobs/export_csv_file_spec.rb
@@ -121,7 +121,7 @@ describe Jobs::ExportCsvFile do
       user1.user_visits.create!(visited_at: '2010-01-03', posts_read: 420)
 
       exporter.extra['name'] = 'visits'
-      exporter.extra['group_id'] = group.id
+      exporter.extra['group'] = group.id
       report = exporter.report_export.to_a
 
       expect(report.length).to eq(2)
@@ -188,6 +188,25 @@ describe Jobs::ExportCsvFile do
       expect(report[3]).to contain_exactly("2010-01-03", "3", "6", "9")
     end
 
+    it 'works with posts reports and filters' do
+      category = Fabricate(:category)
+      subcategory = Fabricate(:category, parent_category: category)
+
+      Fabricate(:post, topic: Fabricate(:topic, category: category), created_at: '2010-01-01 12:00:00 UTC')
+      Fabricate(:post, topic: Fabricate(:topic, category: subcategory), created_at: '2010-01-01 12:00:00 UTC')
+
+      exporter.extra['name'] = 'posts'
+
+      exporter.extra['category'] = category.id
+      report = exporter.report_export.to_a
+      expect(report[0]).to contain_exactly("Count", "Day")
+      expect(report[1]).to contain_exactly("1", "2010-01-01")
+
+      exporter.extra['include_subcategories'] = true
+      report = exporter.report_export.to_a
+      expect(report[0]).to contain_exactly("Count", "Day")
+      expect(report[1]).to contain_exactly("2", "2010-01-01")
+    end
   end
 
   let(:user_list_header) {
diff --git a/spec/models/report_spec.rb b/spec/models/report_spec.rb
index 7ccaf609411..576c713125d 100644
--- a/spec/models/report_spec.rb
+++ b/spec/models/report_spec.rb
@@ -771,7 +771,7 @@ describe Report do
         include_examples 'category filtering'
 
         context "on subcategories" do
-          let(:report) { Report.find('flags', filters: { category: c0.id, 'include-subcategories': true }) }
+          let(:report) { Report.find('flags', filters: { category: c0.id, 'include_subcategories': true }) }
 
           include_examples 'category filtering on subcategories'
         end
@@ -801,7 +801,7 @@ describe Report do
         include_examples 'category filtering'
 
         context "on subcategories" do
-          let(:report) { Report.find('topics', filters: { category: c0.id, 'include-subcategories': true }) }
+          let(:report) { Report.find('topics', filters: { category: c0.id, 'include_subcategories': true }) }
 
           include_examples 'category filtering on subcategories'
         end
@@ -892,7 +892,7 @@ describe Report do
         include_examples 'category filtering'
 
         context "on subcategories" do
-          let(:report) { Report.find('posts', filters: { category: c0.id, 'include-subcategories': true }) }
+          let(:report) { Report.find('posts', filters: { category: c0.id, 'include_subcategories': true }) }
 
           include_examples 'category filtering on subcategories'
         end
@@ -924,7 +924,7 @@ describe Report do
         include_examples 'category filtering'
 
         context "on subcategories" do
-          let(:report) { Report.find('topics_with_no_response', filters: { category: c0.id, 'include-subcategories': true }) }
+          let(:report) { Report.find('topics_with_no_response', filters: { category: c0.id, 'include_subcategories': true }) }
 
           include_examples 'category filtering on subcategories'
         end
@@ -960,7 +960,7 @@ describe Report do
         include_examples 'category filtering'
 
         context "on subcategories" do
-          let(:report) { Report.find('likes', filters: { category: c0.id, 'include-subcategories': true }) }
+          let(:report) { Report.find('likes', filters: { category: c0.id, 'include_subcategories': true }) }
 
           include_examples 'category filtering on subcategories'
         end
@@ -1236,4 +1236,33 @@ describe Report do
       end
     end
   end
+
+  describe "top_uploads" do
+    context "with no data" do
+      it "works" do
+        report = Report.find("top_uploads")
+
+        expect(report.data).to be_empty
+      end
+    end
+
+    context "with data" do
+      fab!(:jpg_upload) { Fabricate(:upload, extension: :jpg) }
+      fab!(:png_upload) { Fabricate(:upload, extension: :png) }
+
+      it "works" do
+        report = Report.find("top_uploads")
+
+        expect(report.data.length).to eq(2)
+        expect(report.data.map { |row| row[:extension] }).to contain_exactly("jpg", "png")
+      end
+
+      it "works with filters" do
+        report = Report.find("top_uploads", filters: { file_extension: "jpg" })
+
+        expect(report.data.length).to eq(1)
+        expect(report.data[0][:extension]).to eq("jpg")
+      end
+    end
+  end
 end