diff --git a/icu4c/source/data/rbnf/ru.txt b/icu4c/source/data/rbnf/ru.txt
index 9d1c0fb4d5..fd4d224116 100644
--- a/icu4c/source/data/rbnf/ru.txt
+++ b/icu4c/source/data/rbnf/ru.txt
@@ -13,10 +13,11 @@ ru {
 
 //         * Spellout rules for Russian.
 
-    // TODO: Can someone supply me with information on negatives and decimals?
+    // TODO: Can someone supply me with information on decimals?
     // How about words for billions and trillions?
 
     SpelloutRules {
+        "-x: \u043C\u0438\u043D\u0443\u0441 >>;\n"    
         "\u043d\u043e\u043b\u044c; \u043e\u0434\u0438\u043d; \u0434\u0432\u0430; \u0442\u0440\u0438; "
         "\u0447\u0435\u0442\u044b\u0440\u0435; \u043f\u044f\u0442\u044C; \u0448\u0435\u0441\u0442\u044C; "
         "\u0441\u0435\u043c\u044c; \u0432\u043e\u0441\u0435\u043c\u044c; \u0434\u0435\u0432\u044f\u0442\u044C;\n"