diff --git a/locales/am.strings b/locales/am.strings
index 0c284722..3bcee857 100644
--- a/locales/am.strings
+++ b/locales/am.strings
@@ -1,5 +1,6 @@
 "__locale" = "hy_AM.utf8;hy_AM.UTF-8;Arm";
 "__WinEncoding" = "Windows-1251";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/by.strings b/locales/by.strings
index 65e44588..5eefa747 100644
--- a/locales/by.strings
+++ b/locales/by.strings
@@ -1,4 +1,5 @@
 "__locale" = "be_BY.UTF-8;Bel";
+"__fallback" = "ru";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/by_lat.strings b/locales/by_lat.strings
index 9b77c312..8b032e8d 100644
--- a/locales/by_lat.strings
+++ b/locales/by_lat.strings
@@ -1,5 +1,6 @@
 "__locale" = "be_BY@latin;Bel_Lat";
 "__WinEncoding" = "Windows-1251";
+"__fallback" = "ru";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/de.strings b/locales/de.strings
index ad7e5614..4c037179 100644
--- a/locales/de.strings
+++ b/locales/de.strings
@@ -1,4 +1,5 @@
 "__locale" = "de_DE.UTF-8;Deu";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/eo.strings b/locales/eo.strings
index 8ae94810..e35a7ab3 100644
--- a/locales/eo.strings
+++ b/locales/eo.strings
@@ -1,4 +1,5 @@
 "__locale" = "eo.utf8";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/kk.strings b/locales/kk.strings
index 33fd406f..5c6cbbd3 100644
--- a/locales/kk.strings
+++ b/locales/kk.strings
@@ -1,4 +1,5 @@
 "__locale" = "kk_KZ.UTF-8;Kaz";
+"__fallback" = "ru";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/pl.strings b/locales/pl.strings
index 4c236bc1..8f6e3da1 100644
--- a/locales/pl.strings
+++ b/locales/pl.strings
@@ -1,5 +1,6 @@
 "__locale" = "pl_PL.utf8;pl_PL.UTF-8;Pol";
 "__WinEncoding" = "Windows-1251";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/sr_cyr.strings b/locales/sr_cyr.strings
index a25ab905..e9778187 100644
--- a/locales/sr_cyr.strings
+++ b/locales/sr_cyr.strings
@@ -1,4 +1,5 @@
 "__locale" = "sr_CS.UTF-8;Srb";
+"__fallback" = "ru";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/sr_lat.strings b/locales/sr_lat.strings
index c34cd3fb..869347ae 100644
--- a/locales/sr_lat.strings
+++ b/locales/sr_lat.strings
@@ -1,4 +1,5 @@
 "__locale" = "sr_CS.UTF-8;Srb_Latin";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/tr.strings b/locales/tr.strings
index 35648294..ea7255e8 100644
--- a/locales/tr.strings
+++ b/locales/tr.strings
@@ -1,4 +1,5 @@
 "__locale" = "tr_TR.UTF-8;Tur";
+"__fallback" = "en";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */
 
diff --git a/locales/ua.strings b/locales/ua.strings
index fac74089..184eaebb 100644
--- a/locales/ua.strings
+++ b/locales/ua.strings
@@ -1,5 +1,6 @@
 "__locale" = "uk_UA.utf8;Ukr";
 "__WinEncoding" = "Windows-1251";
+"__fallback" = "ru";
 
 /* Check for https://www.unicode.org/cldr/charts/latest/supplemental/language_plural_rules.html */