diff --git a/pkgs/development/python-modules/pybigwig/default.nix b/pkgs/development/python-modules/pybigwig/default.nix
index 1a7a63ee5f48..4e3f0d5af719 100644
--- a/pkgs/development/python-modules/pybigwig/default.nix
+++ b/pkgs/development/python-modules/pybigwig/default.nix
@@ -7,11 +7,12 @@
 }:
 
 buildPythonPackage rec {
-  pname = "pyBigWig";
+  pname = "pybigwig";
   version = "0.3.18";
 
   src = fetchPypi {
-    inherit pname version;
+    pname = "pyBigWig";
+    inherit version;
     sha256 = "4c2a8c571b4100ad7c4c318c142eb48558646be52aaab28215a70426f5be31bc";
   };