diff --git a/intl/uconv/src/charsetTitles.properties b/intl/uconv/src/charsetTitles.properties
index 5caec5c31e0a..18890f74de89 100644
--- a/intl/uconv/src/charsetTitles.properties
+++ b/intl/uconv/src/charsetTitles.properties
@@ -61,7 +61,6 @@ utf-7.title = Unicode (UTF-7)
 utf-8.title = Unicode (UTF-8)
 iso-8859-5.title = Cyrillic (ISO-8859-5)
 iso-ir-111.title = Cyrillic (ISO-IR-111)
-cp-866.title = Cyrillic (CP-866)
 windows-1251.title = Cyrillic (Windows-1251)
 x-mac-cyrillic.title = Cyrillic (MacCyrillic)
 x-mac-ukrainian.title = Cyrillic/Ukrainian (MacUkrainian)
@@ -85,7 +84,7 @@ iso-8859-8-e.title = Hebrew (ISO-8859-8-E)
 windows-1255.title = Hebrew (Windows-1255)
 windows-1256.title = Arabic (Windows-1256)
 x-user-defined.title = User Defined
-ibm866.title = Cyrillic/Russian (IBM-866)
+ibm866.title = Cyrillic/Russian (CP-866)
 ibm850.title = Western (IBM-850)
 ibm852.title = Central European (IBM-852)
 ibm855.title = Cyrillic (IBM-855)
diff --git a/intl/uconv/src/charsetalias.properties b/intl/uconv/src/charsetalias.properties
index 34f5eebbb152..a24801d2f1f1 100644
--- a/intl/uconv/src/charsetalias.properties
+++ b/intl/uconv/src/charsetalias.properties
@@ -305,6 +305,7 @@ ibm874=TIS-620
 ## Aliases for IBM866
 ##
 cp866=IBM866
+cp-866=IBM866
 866=IBM866
 csIBM866=IBM866
 ##