diff --git a/include/ntapi/nt_thread.h b/include/ntapi/nt_thread.h
index 7e39c96..e6d68c0 100644
--- a/include/ntapi/nt_thread.h
+++ b/include/ntapi/nt_thread.h
@@ -19,7 +19,7 @@ typedef enum _nt_thread_info_class {
 	NT_THREAD_QUERY_SET_WIN32_START_ADDRESS,
 	NT_THREAD_ZERO_TLS_CELL,
 	NT_THREAD_PERFORMANCE_COUNT,
-	NT_THREAD_AM_I_LASTNT_THREAD,
+	NT_THREAD_AM_I_LAST_THREAD,
 	NT_THREAD_IDEAL_PROCESSOR,
 	NT_THREAD_PRIORITY_BOOST,
 	NT_THREAD_SET_TLS_ARRAY_ADDRESS,