1 files changed, 6 insertions, 0 deletions
diff --git a/common/rfb/util.cxx b/common/rfb/util.cxx
index a3f16443..d1a8cc33 100644
--- a/common/rfb/util.cxx
+++ b/common/rfb/util.cxx
@@ -266,6 +266,8 @@ namespace rfb {
       *dst++ = 0x80 | (src & 0x3f);
       *dst++ = '\0';
       return 2;
+    } else if ((src >= 0xd800) && (src < 0xe000)) {
+      return ucs4ToUTF8(0xfffd, dst);
     } else if (src < 0x10000) {
       *dst++ = 0xe0 | (src >> 12);
       *dst++ = 0x80 | ((src >> 6) & 0x3f);
@@ -334,6 +336,10 @@ namespace rfb {
       max--;
     }
 
+    // UTF-16 surrogate code point?
+    if ((*dst >= 0xd800) && (*dst < 0xe000))
+      *dst = 0xfffd;
+
     return consumed;
   }