diff --git a/Lib/test/test_sys_settrace.py b/Lib/test/test_sys_settrace.py
index 3e3eb632e1040d..a41b845e4de6b6 100644
--- a/Lib/test/test_sys_settrace.py
+++ b/Lib/test/test_sys_settrace.py
@@ -323,8 +323,7 @@ def _reconfigure_frame(self, frame):
             frame.f_trace_opcodes = self.trace_opcode_events
 
     def trace(self, frame, event, arg):
-        if event == 'line':
-            assert lineno_matches_lasti(frame)
+        assert lineno_matches_lasti(frame)
         self._reconfigure_frame(frame)
         self.events.append((frame.f_lineno, event))
         return self.trace
@@ -1886,6 +1885,7 @@ def __init__(self, function, jumpFrom, jumpTo, event='line',
     def trace(self, frame, event, arg):
         if self.done:
             return
+        assert lineno_matches_lasti(frame)
         # frame.f_code.co_firstlineno is the first line of the decorator when
         # 'function' is decorated and the decorator may be written using
         # multiple physical lines when it is too long. Use the first line