diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index 9f189de..e1cb235 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -158,7 +158,7 @@
 
 #array arraymodule.c	# array objects
 #cmath cmathmodule.c # -lm # complex math library functions
-#math mathmodule.c # -lm # math library functions, e.g. sin()
+#math mathmodule.c _math.c # -lm # math library functions, e.g. sin()
 #_struct _struct.c	# binary structure packing/unpacking
 #time timemodule.c # -lm # time operations and variables
 #operator operator.c	# operator.add() and similar goodies