diff --git a/src/lib/y2s390/dialogs/format_dialog.rb b/src/lib/y2s390/dialogs/format_dialog.rb
index 3fca2061..86d1c2f4 100644
--- a/src/lib/y2s390/dialogs/format_dialog.rb
+++ b/src/lib/y2s390/dialogs/format_dialog.rb
@@ -43,6 +43,8 @@ class FormatDialog < ::UI::Dialog
       #
       # @param dasds [Array<Y2S390::Dasd>] list of DASDs to be formatted
       def initialize(dasds)
+        super()
+
         textdomain "s390"
         @dasds = dasds
         @fmt_process = FormatProcess.new(dasds)
diff --git a/test/y2s390/dialogs/format_dialog_test.rb b/test/y2s390/dialogs/format_dialog_test.rb
index 3ae72b72..1ec9349a 100755
--- a/test/y2s390/dialogs/format_dialog_test.rb
+++ b/test/y2s390/dialogs/format_dialog_test.rb
@@ -84,6 +84,7 @@ def mock_ui_events(*events)
     context "when the process is not running after 0.2 seconds of waiting" do
       before do
         allow(fmt_process).to receive(:running?).and_return(false)
+        allow(subject).to receive(:report_format_failed)
       end
 
       it "reports a format failed error" do
@@ -93,6 +94,7 @@ def mock_ui_events(*events)
       end
 
       it "returns nil" do
+        expect(subject.run).to eq nil
       end
     end