diff --git a/Misc/SpecialBuilds.txt b/Misc/SpecialBuilds.txt
index ae9ab4c..e0b3315 100644
--- a/Misc/SpecialBuilds.txt
+++ b/Misc/SpecialBuilds.txt
@@ -1,8 +1,8 @@
 This file describes some special Python build types enabled via
 compile-time preprocessor defines.
 
-It is best to define these options in the EXTRA_CFLAGS environment variable;
-``EXTRA_CFLAGS="-DPy_REF_DEBUG" ./configure``.
+It is best to define these options in the EXTRA_CFLAGS make variable;
+``make EXTRA_CFLAGS="-DPy_REF_DEBUG"``.
 
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 Py_REF_DEBUG                                              introduced in 1.4