diff --git a/src/corelib/io/qdebug.cpp b/src/corelib/io/qdebug.cpp
index 4600b8ee99e..e1f5035d9c0 100644
--- a/src/corelib/io/qdebug.cpp
+++ b/src/corelib/io/qdebug.cpp
@@ -276,8 +276,8 @@ static inline void putEscapedString(QTextStreamPrivate *d, const Char *begin, si
                         buflen = 2;
                     } else {
                         buf[1] = 'U';
-                        buf[2] = '0'; // toHexUpper(ucs4 >> 32);
-                        buf[3] = '0'; // toHexUpper(ucs4 >> 28);
+                        buf[2] = '0'; // toHexUpper(ucs4 >> 28);
+                        buf[3] = '0'; // toHexUpper(ucs4 >> 24);
                         buf[4] = toHexUpper(ucs4 >> 20);
                         buf[5] = toHexUpper(ucs4 >> 16);
                         buf[6] = toHexUpper(ucs4 >> 12);