--- a/widget/xremoteclient/DBusRemoteClient.cpp
+++ b/widget/xremoteclient/DBusRemoteClient.cpp
@@ -84,17 +84,17 @@ DBusRemoteClient::DoSendDBusCommandLine(
 {
   if(!aProfile || aProfile[0] == '\0') {
     return NS_ERROR_INVALID_ARG;
   }
 
   // D-Bus names can contain only [a-z][A-Z][0-9]_
   // characters so adjust the profile string properly.
   nsAutoCString profileName;
-  nsresult rv = mozilla::Base64Encode(nsAutoCString(aProfileName), profileName);
+  nsresult rv = mozilla::Base64Encode(nsAutoCString(aProfile), profileName);
   NS_ENSURE_SUCCESS(rv, rv);
   profileName.ReplaceChar("+/=", '_');
 
   nsAutoCString destinationName;
   destinationName = nsPrintfCString("org.mozilla.%s.%s", aProgram, profileName.get());
 
   nsAutoCString pathName;
   pathName = nsPrintfCString("/org/mozilla/%s/Remote", aProgram);