diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 9ee0da1807edff462536e3628e1db217bb835cd8..c8804827d4360456a22ff7d5790c5b49e06e3b79 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1058,7 +1058,7 @@ END(error_entry)
 
 
 /*
- * On entry, EBS is a "return to kernel mode" flag:
+ * On entry, EBX is a "return to kernel mode" flag:
  *   1: already in kernel mode, don't need SWAPGS
  *   0: user gsbase is loaded, we need SWAPGS and standard preparation for return to usermode
  */