diff --git a/expat/xmltok/xmltok.c b/expat/xmltok/xmltok.c
index 38b9b2d9..23d3a946 100755
--- a/expat/xmltok/xmltok.c
+++ b/expat/xmltok/xmltok.c
@@ -1371,7 +1371,8 @@ int getEncodingIndex(const char *name)
 /* For binary compatibility, we store the index of the encoding specified
 at initialization in the isUtf16 member. */
 
-#define INIT_ENC_INDEX(enc) ((enc)->initEnc.isUtf16)
+#define INIT_ENC_INDEX(enc) ((int)(enc)->initEnc.isUtf16)
+#define SET_INIT_ENC_INDEX(enc, i) ((enc)->initEnc.isUtf16 = (char)i)
 
 /* This is what detects the encoding.
 encodingTable maps from encoding indices to encodings;