diff --git a/Lib/test/test_math.py b/Lib/test/test_math.py
index 8419a1f..743d46b 100644
--- a/Lib/test/test_math.py
+++ b/Lib/test/test_math.py
@@ -181,7 +181,7 @@
         raise TestFailed("overflowing exp() didn't trigger OverflowError")
 
     # If this fails, it could be a puzzle.  One odd possibility is that
-    # mathmodule.c's CHECK() macro is getting confused while comparing
+    # mathmodule.c's macros are getting confused while comparing
     # Inf (HUGE_VAL) to a NaN, and artificially setting errno to ERANGE
     # as a result (and so raising OverflowError instead).
     try: