X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/charset/blobdiff_plain/2780033c4a0de98250091a54a3a3edde6da461fc..273ef1a19b9f44a1dbe4365e66d854879415ff5a:/xenc.c

diff --git a/xenc.c b/xenc.c
index d27dafb..ba1c283 100644
--- a/xenc.c
+++ b/xenc.c
@@ -83,7 +83,7 @@ int charset_from_xenc(const char *name)
 	p = name;
 	q = xencs[i].name;
 	while (*p || *q) {
-	    if (tolower(*p) != tolower(*q))
+		if (tolower((unsigned char)*p) != tolower((unsigned char)*q))
 		break;
 	    p++; q++;
 	}