diff --git a/unicodedomino.sty b/unicodedomino.sty
index 060778466e04d2547a3adf20cbd068304926d980..497c019a860573fa1ca94c41ee1a4e6edfb3a689 100644
--- a/unicodedomino.sty
+++ b/unicodedomino.sty
@@ -90,7 +90,7 @@
  }%
 \else%
  % v1.2i 2019/07/09, or newer
- \long\def\UTFviii@two@octets#1#2{%
+ \long\def\UTFviii@two@octets@combine#1#2{%
   \ifx\protect\@typeset@protect%
    \edef\unicodedomino@tmp{#1\unicodedomino@last{\string#2}}%
    \expandafter\unicodedomino@octets\unicodedomino@tmp\empty%
@@ -99,7 +99,7 @@
    \string#1\string#2%
   \fi%
  }%
- \long\def\UTFviii@three@octets#1#2#3{%
+ \long\def\UTFviii@three@octets@combine#1#2#3{%
   \ifx\protect\@typeset@protect%
    \edef\unicodedomino@tmp{#1\unicodedomino@last{\string#2}\unicodedomino@last{\string#3}}%
    \expandafter\unicodedomino@octets\unicodedomino@tmp\empty%
@@ -108,7 +108,7 @@
    \string#1\string#2\string#3%
   \fi%
  }%
- \long\def\UTFviii@four@octets#1#2#3#4{%
+ \long\def\UTFviii@four@octets@combine#1#2#3#4{%
   \ifx\protect\@typeset@protect%
    \edef\unicodedomino@tmp{#1\unicodedomino@last{\string#2}\unicodedomino@last{\string#3}\unicodedomino@last{\string#4}}%
    \expandafter\unicodedomino@octets\unicodedomino@tmp\empty%