diff --git a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
index a8285a4d790c..9a77a4d588f1 100644
--- a/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
+++ b/pkgs/applications/editors/emacs/elisp-packages/melpa-packages.nix
@@ -357,6 +357,13 @@ let
 
         forge = buildWithGit super.forge;
 
+        gnuplot-mode = super.gnuplot-mode.overrideAttrs (attrs: {
+          postPatch = attrs.postPatch or "" + ''
+            substituteInPlace gnuplot-mode.el \
+              --replace-fail 'gnuplot-program "gnuplot"' 'gnuplot-program "${lib.getExe pkgs.gnuplot}"'
+          '';
+        });
+
         magit = buildWithGit super.magit;
 
         magit-find-file = buildWithGit super.magit-find-file;