diff --git a/rfc2231.c b/rfc2231.c
index 49fcc5d..f9a508b 100644
--- a/rfc2231.c
+++ b/rfc2231.c
@@ -45,7 +45,7 @@ blaze822_mime2231_parameter(char *s, char *name,
 		if (blaze822_mime_parameter(s, namenum, &sbuf, &ebuf)) {
 found_extended:
 			// decode extended
-			if (i == 0) { // extended-initial-value
+			if (i == 0 || i == 100) { // extended-initial-value
 				char *encstart = sbuf;
 				sbuf = strchr(sbuf, '\'');
 				if (!sbuf)