diff --git a/Tools/cases_generator/analyzer.py b/Tools/cases_generator/analyzer.py
index b9507a263a1867..1fd306e1572075 100644
--- a/Tools/cases_generator/analyzer.py
+++ b/Tools/cases_generator/analyzer.py
@@ -445,7 +445,7 @@ def in_frame_push(idx: int) -> bool:
             )
 
         if lhs[0].kind == lx.TIMES or any(
-            t.kind == lx.ARROW or t.kind == lx.LBRACKET for t in lhs[1:]
+            t.kind in {lx.ARROW, lx.LBRACKET} for t in lhs[1:]
         ):
             # Don't handle: *ptr = ..., ptr->field = ..., or ptr[field] = ...
             # Assume that they are visible to the GC.