--- src/lib/compat.c.orig	2006-11-10 16:14:09.657213418 -0500
+++ src/lib/compat.c	2006-11-10 16:19:28.134744825 -0500
@@ -34,7 +34,7 @@
 
 int my_strncasecmp(const char *s1, const char *s2, size_t max_chars)
 {
-	while (max_chars > 0 && *s1 != '\0' &&
+	while (--max_chars > 0 && *s1 != '\0' &&
 	       i_toupper(*s1) == i_toupper(*s2)) {
 		s1++; s2++;
 	}