diff --git a/pkgs/development/python-modules/email-validator/default.nix b/pkgs/development/python-modules/email-validator/default.nix
index ea8c8929696..5d9f0ca88fa 100644
--- a/pkgs/development/python-modules/email-validator/default.nix
+++ b/pkgs/development/python-modules/email-validator/default.nix
@@ -1,7 +1,7 @@
 { lib, buildPythonPackage, fetchPypi, isPy3k, dnspython, idna, ipaddress }:
 
 buildPythonPackage rec {
-  pname = "email_validator";
+  pname = "email-validator";
   version = "1.1.2";
 
   src = fetchPypi {