diff --git a/common/supplemental/plurals.xml b/common/supplemental/plurals.xml
index 087a8f2af2a..c122404a111 100644
--- a/common/supplemental/plurals.xml
+++ b/common/supplemental/plurals.xml
@@ -35,7 +35,7 @@ CLDR data files are interpreted according to the LDML specification (http://unic
             <pluralRule count="one">n = 0,1 or i = 0 and f = 1 @integer 0, 1 @decimal 0.0, 0.1, 1.0, 0.00, 0.01, 1.00, 0.000, 0.001, 1.000, 0.0000, 0.0001, 1.0000</pluralRule>
             <pluralRule count="other"> @integer 2~17, 100, 1000, 10000, 100000, 1000000, … @decimal 0.2~0.9, 1.1~1.8, 10.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …</pluralRule>
         </pluralRules>
-        <pluralRules locales="ak bho guw ln mg nso pa ti wa">
+        <pluralRules locales="ak bho csw guw ln mg nso pa ti wa">
             <pluralRule count="one">n = 0..1 @integer 0, 1 @decimal 0.0, 1.0, 0.00, 1.00, 0.000, 1.000, 0.0000, 1.0000</pluralRule>
             <pluralRule count="other"> @integer 2~17, 100, 1000, 10000, 100000, 1000000, … @decimal 0.1~0.9, 1.1~1.7, 10.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …</pluralRule>
         </pluralRules>