diff --git a/pkgs/top-level/emacs-packages.nix b/pkgs/top-level/emacs-packages.nix
index 6cd80613526b..a83c3baaa4a0 100644
--- a/pkgs/top-level/emacs-packages.nix
+++ b/pkgs/top-level/emacs-packages.nix
@@ -178,7 +178,7 @@ let
       for file in elpy.el elpy-pkg.el; do
         substituteInPlace $file \
             --replace "company \"0.8.2\"" "company \"${company.version}\"" \
-            --replace "find-file-in-project \"3.3\"" "find-file-in-project \"${melpaPackages.find-file-in-project.version}\"" \
+            --replace "find-file-in-project \"3.3\"" "find-file-in-project \"${(melpaPackages self).find-file-in-project.version}\"" \
             --replace "highlight-indentation \"0.5.0\"" "highlight-indentation \"${highlight-indentation.version}\"" \
             --replace "pyvenv \"1.3\"" "pyvenv \"${pyvenv.version}\"" \
             --replace "yasnippet \"0.8.0\"" "yasnippet \"${yasnippet.version}\""