1 files changed, 2 insertions, 2 deletions
diff --git a/cpp/src/Slice/DotNetNames.cpp b/cpp/src/Slice/DotNetNames.cpp
index cd3b3187f47..198bf1ca750 100644
--- a/cpp/src/Slice/DotNetNames.cpp
+++ b/cpp/src/Slice/DotNetNames.cpp
@@ -1,6 +1,6 @@
 // **********************************************************************
 //
-// Copyright (c) 2003-2008 ZeroC, Inc. All rights reserved.
+// Copyright (c) 2003-2009 ZeroC, Inc. All rights reserved.
 //
 // This copy of Ice is licensed to you under the terms described in the
 // ICE_LICENSE file included in this distribution.
@@ -84,7 +84,7 @@ ciEquals(const string& s, const char* p)
     string::const_iterator i = s.begin();
     while(i != s.end())
     {
-        if(tolower(*i++) != tolower(*p++))
+        if(tolower(static_cast<unsigned char>(*i++)) != tolower(static_cast<unsigned char>(*p++)))
         {
             return false;
         }