diff --git a/package/yast2-storage-ng.changes b/package/yast2-storage-ng.changes
index 7a048a818a..828fcdf693 100644
--- a/package/yast2-storage-ng.changes
+++ b/package/yast2-storage-ng.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Nov 11 14:44:26 UTC 2020 - Martin Vidner <mvidner@suse.com>
+
+- Untranslated error message in 'Edit Btrfs subvolumes'/
+  'Add subvolume' (bsc#1130822)
+- Detect missing textdomain during unit testing.
+- 4.3.20
+
 -------------------------------------------------------------------
 Thu Nov  5 10:26:55 UTC 2020 - Stefan Hundhammer <shundhammer@suse.com>
 
diff --git a/package/yast2-storage-ng.spec b/package/yast2-storage-ng.spec
index 6820a90e97..9fdc1acfe3 100644
--- a/package/yast2-storage-ng.spec
+++ b/package/yast2-storage-ng.spec
@@ -16,7 +16,7 @@
 #
 
 Name:           yast2-storage-ng
-Version:        4.3.19
+Version:        4.3.20
 Release:        0
 Summary:        YaST2 - Storage Configuration
 License:        GPL-2.0-only OR GPL-3.0-only
diff --git a/src/lib/y2partitioner/dialogs/btrfs_subvolume.rb b/src/lib/y2partitioner/dialogs/btrfs_subvolume.rb
index 6c531dfab2..fda33e49a9 100644
--- a/src/lib/y2partitioner/dialogs/btrfs_subvolume.rb
+++ b/src/lib/y2partitioner/dialogs/btrfs_subvolume.rb
@@ -102,6 +102,7 @@ class SubvolumePath < CWM::InputField
         # @param form [Dialogs::BtrfsSubvolume::Form]
         # @param filesystem [Y2Storage::Filesystems::BlkFilesystem] a btrfs filesystem
         def initialize(form, filesystem: nil)
+          textdomain "storage"
           @form = form
           @filesystem = filesystem
         end
@@ -236,6 +237,7 @@ class SubvolumeNocow < CWM::CheckBox
         # @param form [Dialogs::BtrfsSubvolume::Form]
         # @param filesystem [Y2Storage::Filesystems::BlkFilesystem] a btrfs filesystem
         def initialize(form, filesystem: nil)
+          textdomain "storage"
           @form = form
           @filesystem = filesystem
         end
diff --git a/src/lib/y2partitioner/dialogs/import_mount_points.rb b/src/lib/y2partitioner/dialogs/import_mount_points.rb
index 5555ec3ee7..9db10272cd 100644
--- a/src/lib/y2partitioner/dialogs/import_mount_points.rb
+++ b/src/lib/y2partitioner/dialogs/import_mount_points.rb
@@ -87,6 +87,7 @@ class FormatWidget < CWM::CheckBox
         #
         # @param controller [Actions::Controllers::Fstabs]
         def initialize(controller)
+          textdomain "storage"
           @controller = controller
         end
 
diff --git a/src/lib/y2partitioner/widgets/fstab_selector.rb b/src/lib/y2partitioner/widgets/fstab_selector.rb
index d7b95b433b..acba394b41 100644
--- a/src/lib/y2partitioner/widgets/fstab_selector.rb
+++ b/src/lib/y2partitioner/widgets/fstab_selector.rb
@@ -191,6 +191,7 @@ class FstabContent < CWM::CustomWidget
         #
         # @param fstab [Y2Storage::Fstab]
         def initialize(fstab)
+          textdomain "storage"
           @fstab = fstab
         end
 
@@ -235,6 +236,7 @@ class FstabTable < Widgets::BlkDevicesTable
         #
         # @param fstab [Y2Storage::Fstab]
         def initialize(fstab)
+          textdomain "storage"
           @fstab = fstab
         end
 
diff --git a/test/spec_helper.rb b/test/spec_helper.rb
index d8a31d407c..21d5058d3c 100644
--- a/test/spec_helper.rb
+++ b/test/spec_helper.rb
@@ -26,6 +26,8 @@
 # make sure we run the tests in English locale
 # (some tests check the output which is marked for translation)
 ENV["LC_ALL"] = "en_US.UTF-8"
+# fail fast if a class does not declare textdomain (bsc#1130822)
+ENV["Y2STRICTTEXTDOMAIN"] = "1"
 
 LIBS_TO_SKIP = ["y2packager/repository"]