diff --git a/ChangeLog b/ChangeLog
index 7812570335..edfebede38 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Feb  5 14:40:16 2014  Koichi Sasada  <ko1@atdot.net>
+
+	* ext/objspace/objspace_dump.c (dump_object): use STR_SHARED_P()
+	  instead of removed STR_NOCAPA_P() macro.
+
 Wed Feb  5 13:51:33 2014  Koichi Sasada  <ko1@atdot.net>
 
 	* internal.h, vm_core.h: move LIKELY/UNLIKELY/UNINITIALIZED_VAR()
diff --git a/ext/objspace/objspace_dump.c b/ext/objspace/objspace_dump.c
index 8f95a49c56..6b3bf44489 100644
--- a/ext/objspace/objspace_dump.c
+++ b/ext/objspace/objspace_dump.c
@@ -182,7 +182,7 @@ dump_object(VALUE obj, struct dump_config *dc)
 	    dump_append(dc, ", \"shared\":true");
 	else {
 	    dump_append(dc, ", \"bytesize\":%ld", RSTRING_LEN(obj));
-	    if (!STR_EMBED_P(obj) && !STR_NOCAPA_P(obj) && (long)rb_str_capacity(obj) != RSTRING_LEN(obj))
+	    if (!STR_EMBED_P(obj) && !STR_SHARED_P(obj) && (long)rb_str_capacity(obj) != RSTRING_LEN(obj))
 		dump_append(dc, ", \"capacity\":%ld", rb_str_capacity(obj));
 
 	    if (is_ascii_string(obj)) {