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-rw-r--r--Include/unicodeobject.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/Include/unicodeobject.h b/Include/unicodeobject.h
index 01dce94..e88b8ed 100644
--- a/Include/unicodeobject.h
+++ b/Include/unicodeobject.h
@@ -78,7 +78,9 @@ Copyright (c) Corporation for National Research Initiatives.
PyUnicode_AsWideChar(). */
#ifdef HAVE_USABLE_WCHAR_T
-# define HAVE_WCHAR_H
+# ifndef HAVE_WCHAR_H
+# define HAVE_WCHAR_H
+# endif
#endif
#ifdef HAVE_WCHAR_H