diff --git a/setup.cfg b/setup.cfg
index a5efdcfa..9a2ccf23 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -23,7 +23,7 @@ mx_include_dir=
 have_ssl=0
 
 # Set to 1 to statically link against the postgresql client library.
-static_libpq=0
+static_libpq=
 
 # Add here eventual extra libraries required to link the module.
 libraries=