diff --git a/setup.py b/setup.py
index a053fe6..feed0cd 100644
--- a/setup.py
+++ b/setup.py
@@ -47,13 +47,10 @@
         from cryptography.hazmat.primitives import constant_time, padding
 
         self.distribution.ext_modules = [
+            Binding().ffi.verifier.get_extension(),
             constant_time._ffi.verifier.get_extension(),
             padding._ffi.verifier.get_extension()
         ]
-        if Binding.is_available():
-            self.distribution.ext_modules.append(
-                Binding().ffi.verifier.get_extension()
-            )
 
         build.finalize_options(self)