diff --git a/devel/sope/files/patch-sope-mime_NGMime_NGMimeType.m b/devel/sope/files/patch-sope-mime_NGMime_NGMimeType.m
new file mode 100644
index 000000000000..5a47a3b68f31
--- /dev/null
+++ b/devel/sope/files/patch-sope-mime_NGMime_NGMimeType.m
@@ -0,0 +1,18 @@
+--- sope-mime/NGMime/NGMimeType.m.orig	2023-06-20 10:08:44 UTC
++++ sope-mime/NGMime/NGMimeType.m
+@@ -125,13 +125,13 @@ static Class NSStringClass  = Nil;
+     encoding = NSKoreanEUCStringEncoding;
+   }
+   else if ([charset isEqualToString:@"big5"]) {
+-    encoding = NSBIG5StringEncoding;
++    encoding = NSBig5StringEncoding;
+   }
+   else if ([charset isEqualToString:@"iso-2022-jp"]) {
+     encoding = NSISO2022JPStringEncoding;
+   }
+   else if ([charset isEqualToString:@"gb2312"]) {
+-    encoding = NSGB2312StringEncoding;
++    encoding = NSChineseEUCStringEncoding;
+   }
+   else if ([charset isEqualToString:@"koi8-r"]) {
+     encoding = NSKOI8RStringEncoding;