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-rw-r--r--cpp/src/IceUtil/Unicode.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/cpp/src/IceUtil/Unicode.cpp b/cpp/src/IceUtil/Unicode.cpp
index 4a7537a1308..c4ea2d36b16 100644
--- a/cpp/src/IceUtil/Unicode.cpp
+++ b/cpp/src/IceUtil/Unicode.cpp
@@ -18,7 +18,7 @@
#if defined(_WIN32)
# define SIZEOF_WCHAR_T 2
#elif (defined(__sun) && defined(__sparc)) || \
- ((defined(__linux) || defined(__FreeBSD__)) && defined (__i386))
+ ((defined(__linux) || defined(__FreeBSD__)) && (defined(__i386) || defined(__x86_64)))
# define SIZEOF_WCHAR_T 4
#endif