diff --git a/gc.rb b/gc.rb
index 0e6955d577..d3bb8db036 100644
--- a/gc.rb
+++ b/gc.rb
@@ -307,7 +307,7 @@ module GC
#
# A flag will be set to notify that a full mark has been
# requested. This flag is accessible using
- # GC.latest_gc_info(:needs_major_by)
+ # GC.latest_gc_info(:need_major_by)
#
# The user can trigger a major collection at any time using
# GC.start(full_mark: true)