diff --git a/pkgs/by-name/ra/raysession/package.nix b/pkgs/by-name/ra/raysession/package.nix
index 914be3150f61..8314bb5b85e0 100644
--- a/pkgs/by-name/ra/raysession/package.nix
+++ b/pkgs/by-name/ra/raysession/package.nix
@@ -54,7 +54,7 @@ python3Packages.buildPythonApplication rec {
   ];
 
   postFixup = ''
-    wrapPythonProgramsIn "$out/share/raysession/src" "$out $pythonPath"
+    wrapPythonProgramsIn "$out/share/raysession/src" "$out ''${pythonPath[*]}"
     for file in $out/bin/*; do
       wrapQtApp "$file"
     done