1 files changed, 1 insertions, 1 deletions
diff --git a/thirdparty/icu4c/common/unicode/bytestrie.h b/thirdparty/icu4c/common/unicode/bytestrie.h
index 271a81d1b4..8fe66780f5 100644
--- a/thirdparty/icu4c/common/unicode/bytestrie.h
+++ b/thirdparty/icu4c/common/unicode/bytestrie.h
@@ -394,7 +394,7 @@ private:
               pos_(bytes_), remainingMatchLength_(-1) {}
 
     // No assignment operator.
-    BytesTrie &operator=(const BytesTrie &other);
+    BytesTrie &operator=(const BytesTrie &other) = delete;
 
     inline void stop() {
         pos_=NULL;