diff --git a/contrib/pgrowlocks/pgrowlocks.c b/contrib/pgrowlocks/pgrowlocks.c
index a2c44a916c..caf036f40b 100644
--- a/contrib/pgrowlocks/pgrowlocks.c
+++ b/contrib/pgrowlocks/pgrowlocks.c
@@ -165,7 +165,7 @@ pgrowlocks(PG_FUNCTION_ARGS)
 		infomask = tuple->t_data->t_infomask;
 
 		/*
-		 * A tuple is locked if HTSU returns BeingModified.
+		 * A tuple is locked if HTSU returns TM_BeingModified.
 		 */
 		if (htsu == TM_BeingModified)
 		{