diff --git a/setup.cfg b/setup.cfg
index 220e5a6a..d4c49e43 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [build_ext]
-define=PSYCOPG_DEBUG,PSYCOPG_EXTENSIONS,PSYCOPG_DISPLAY_SIZE,HAVE_PQFREEMEM,HAVE_PQPROTOCOL3
+define=PSYCOPG_EXTENSIONS,PSYCOPG_DISPLAY_SIZE,HAVE_PQFREEMEM,HAVE_PQPROTOCOL3
 # PSYCOPG_EXTENSIONS enables extensions to PEP-249 (you really want this)
 # PSYCOPG_DISPLAY_SIZE enable display size calculation (a little slower)
 # HAVE_PQFREEMEM should be defined on PostgreSQL >= 7.3