diff --git a/intl/uconv/src/nsOS2Charset.cpp b/intl/uconv/src/nsOS2Charset.cpp
index 2362f160c3f..5f0ef860533 100644
--- a/intl/uconv/src/nsOS2Charset.cpp
+++ b/intl/uconv/src/nsOS2Charset.cpp
@@ -100,6 +100,12 @@ nsPlatformCharset::GetCharset(nsPlatformCharsetSel selector, nsAWritableString&
   return NS_OK;
 }
 
+NS_IMETHODIMP
+nsPlatformCharset::GetDefaultCharsetForLocale(const PRUnichar* localeName, PRUnichar** _retValue)
+{
+  return NS_OK;
+}
+
 NS_IMETHODIMP 
 nsPlatformCharset::Init()
 {