X-Git-Url: https://git.distorted.org.uk/~mdw/sgt/charset/blobdiff_plain/36eb75644933f0cfb984f0509966a4015b93874c..273ef1a19b9f44a1dbe4365e66d854879415ff5a:/localenc.c

diff --git a/localenc.c b/localenc.c
index f462729..cd08cab 100644
--- a/localenc.c
+++ b/localenc.c
@@ -156,7 +156,7 @@ int charset_from_localenc(const char *name)
 	p = name;
 	q = localencs[i].name;
 	while (*p || *q) {
-	    if (tolower(*p) != tolower(*q))
+		if (tolower((unsigned char)*p) != tolower((unsigned char)*q))
 		break;
 	    p++; q++;
 	}