diff --git a/pkgs/development/python-modules/posix_ipc/default.nix b/pkgs/development/python-modules/posix_ipc/default.nix
index 39b088f506f7..0df261793e40 100644
--- a/pkgs/development/python-modules/posix_ipc/default.nix
+++ b/pkgs/development/python-modules/posix_ipc/default.nix
@@ -5,7 +5,7 @@
 }:
 
 buildPythonPackage rec {
-  pname = "posix_ipc";
+  pname = "posix-ipc";
   version = "1.1.1";
   format = "setuptools";