diff --git a/pkgs/development/python-modules/libpcap/default.nix b/pkgs/development/python-modules/libpcap/default.nix
index e951a552af28..d23996cb0034 100644
--- a/pkgs/development/python-modules/libpcap/default.nix
+++ b/pkgs/development/python-modules/libpcap/default.nix
@@ -32,7 +32,7 @@ buildPythonPackage rec {
     sed -i "/requires/s/, 'tox>=[^']*'//" pyproject.toml
     cat <<EOF >src/libpcap/libpcap.cfg
     [libpcap]
-    LIBPCAP = ${pkgsLibpcap}/lib/libpcap${stdenv.hostPlatform.extensions.sharedLibrary}
+    LIBPCAP = ${lib.getLib pkgsLibpcap}/lib/libpcap${stdenv.hostPlatform.extensions.sharedLibrary}
     EOF
   '';