diff --git a/src/v8abbr.h b/src/v8abbr.h
index ac4a1693952..9bc425eb844 100644
--- a/src/v8abbr.h
+++ b/src/v8abbr.h
@@ -67,7 +67,7 @@
 #define V8_OFF_STR_LENGTH \
     V8_OFF_HEAP(V8DBG_CLASS_STRING__LENGTH__SMI)
 #define V8_OFF_STR_CHARS  \
-    V8_OFF_HEAP(V8DBG_CLASS_SEQASCIISTRING__CHARS__CHAR)
+    V8_OFF_HEAP(V8DBG_CLASS_SEQONEBYTESTRING__CHARS__CHAR)
 #define V8_OFF_CONSSTR_CAR  \
     V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__FIRST__STRING)
 #define V8_OFF_CONSSTR_CDR  \