diff --git a/src/v8abbr.h b/src/v8abbr.h
index d376f6b1d82..ee2561422a8 100644
--- a/src/v8abbr.h
+++ b/src/v8abbr.h
@@ -105,9 +105,9 @@
 #define V8_OFF_STR_CHARS  \
     V8_OFF_HEAP(V8DBG_CLASS_SEQONEBYTESTRING__CHARS__CHAR)
 #define V8_OFF_CONSSTR_CAR  \
-    V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__FIRST_OFFSET__INT)
+    V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__FIRST_STRING)
 #define V8_OFF_CONSSTR_CDR  \
-    V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__SECOND_OFFSET__INT)
+    V8_OFF_HEAP(V8DBG_CLASS_CONSSTRING__SECOND_STRING)
 #define V8_OFF_EXTSTR_RSRC  \
     V8_OFF_HEAP(V8DBG_CLASS_EXTERNALSTRING__RESOURCE__OBJECT)
 #define V8_OFF_FA_SIZE    \