diff --git a/home-manager/install.nix b/home-manager/install.nix
index 2dfef324e894..63e63dc9aadc 100644
--- a/home-manager/install.nix
+++ b/home-manager/install.nix
@@ -1,4 +1,6 @@
-{ home-manager, runCommand }:
+{ home-manager, runCommand
+, shellHook ? "exec ${home-manager}/bin/home-manager init --switch --no-flake"
+}:
 
 let
 
@@ -12,7 +14,7 @@ in runCommand "home-manager-install" {
   propagatedBuildInputs = [ home-manager ];
   preferLocalBuild = true;
   shellHookOnly = true;
-  shellHook = "exec ${home-manager}/bin/home-manager init --switch --no-flake";
+  inherit shellHook;
 } ''
   ${hmBashLibInit}
   _iError 'This derivation is not buildable, please run it using nix-shell.'
diff --git a/tests/integration/standalone/alice-home-dotprofile.nix b/tests/integration/standalone/alice-home-dotprofile.nix
new file mode 100644
index 000000000000..8759dcccef60
--- /dev/null
+++ b/tests/integration/standalone/alice-home-dotprofile.nix
@@ -0,0 +1,15 @@
+{ config, pkgs, ... }:
+
+{
+  home.username = "alice";
+  home.homeDirectory = "/home/alice";
+  home.stateVersion = "24.11";
+  programs.home-manager.enable = true;
+
+  # Write .profile
+  home.file = {
+    ".profile".text = ''
+      echo sourcing dotprofile
+    '';
+  };
+}
diff --git a/tests/integration/standalone/override-install.nix b/tests/integration/standalone/override-install.nix
new file mode 100644
index 000000000000..5eb4ebf1caec
--- /dev/null
+++ b/tests/integration/standalone/override-install.nix
@@ -0,0 +1,6 @@
+{ hmInstall ? (import <home-manager> { }).install }:
+hmInstall.override {
+  shellHook = ''
+    exec home-manager init --switch --no-flake -b backup
+  '';
+}
diff --git a/tests/integration/standalone/standard-basics.nix b/tests/integration/standalone/standard-basics.nix
index a3efb04112ac..234ff0cb4d72 100644
--- a/tests/integration/standalone/standard-basics.nix
+++ b/tests/integration/standalone/standard-basics.nix
@@ -122,6 +122,16 @@
       machine.succeed("test ! -e /home/alice/.local/state/home-manager")
       machine.succeed("test ! -e /home/alice/.local/state/nix/profiles/home-manager")
 
+    with subtest("Home Manager Installation with preexisting dotfile"):
+      succeed_as_alice("touch /home/alice/.profile")
+
+      succeed_as_alice("cp ${
+        ./alice-home-dotprofile.nix
+      } /home/alice/.config/home-manager/home.nix")
+
+      succeed_as_alice("nix-shell ${./override-install.nix}")
+      succeed_as_alice("test -e /home/alice/.profile.backup")
+
     logout_alice()
   '';
 }