diff --git a/docs/hazmat/primitives/asymmetric/ec.rst b/docs/hazmat/primitives/asymmetric/ec.rst
index 44c24d7..4b0d30c 100644
--- a/docs/hazmat/primitives/asymmetric/ec.rst
+++ b/docs/hazmat/primitives/asymmetric/ec.rst
@@ -6,7 +6,7 @@
 .. currentmodule:: cryptography.hazmat.primitives.asymmetric.ec
 
 
-.. class:: EllipticCurvePrivateNumbers
+.. class:: EllipticCurvePrivateNumbers(private_key, public_numbers)
 
     .. versionadded:: 0.5
 
@@ -26,7 +26,7 @@
         The private key.
 
 
-.. class:: EllipticCurvePublicNumbers
+.. class:: EllipticCurvePublicNumbers(x, y, curve)
 
     .. versionadded:: 0.5