diff --git a/umu/umu_run.py b/umu/umu_run.py
index 3574b2de..abbd7261 100755
--- a/umu/umu_run.py
+++ b/umu/umu_run.py
@@ -296,20 +296,6 @@ def set_env(
 
     # Winetricks
     if env.get("EXE", "").endswith("winetricks"):
-        # Proton directory with the last segment being subdirectory containing
-        # the Proton libraries and binaries. In upstream Proton 9 the subdir
-        # is 'files', while in other versions it may be 'dist'.
-        proton_dist: str = (
-            f"{env['PROTONPATH']}/files"
-            if Path(env["PROTONPATH"], "files").is_dir()
-            else f"{env['PROTONPATH']}/dist"
-        )
-
-        env["WINE"] = f"{proton_dist}/bin/wine"
-        env["WINELOADER"] = env["WINE"]
-        env["WINESERVER"] = f"{proton_dist}/bin/wineserver"
-        env["WINETRICKS_LATEST_VERSION_CHECK"] = "disabled"
-        env["LD_PRELOAD"] = ""
         env["WINETRICKS_SUPER_QUIET"] = (
             "" if os.environ.get("UMU_LOG") == "debug" else "1"
         )
diff --git a/umu/umu_test.py b/umu/umu_test.py
index 7f39adb4..8ca7285f 100644
--- a/umu/umu_test.py
+++ b/umu/umu_test.py
@@ -2091,16 +2091,6 @@ def test_set_env_winetricks(self):
             )
 
             # Winetricks
-            self.assertTrue(self.env["WINE"], "WINE is not set")
-            self.assertTrue(self.env["WINELOADER"], "WINELOADER is not set")
-            self.assertTrue(self.env["WINESERVER"], "WINESERVER is not set")
-            self.assertTrue(
-                self.env["WINETRICKS_LATEST_VERSION_CHECK"],
-                "WINETRICKS_LATEST_VERSION_CHECK is not set",
-            )
-            self.assertTrue(
-                self.env["LD_PRELOAD"] == "", "LD_PRELOAD is not set"
-            )
             self.assertTrue(
                 self.env["WINETRICKS_SUPER_QUIET"],
                 "WINETRICKS_SUPER_QUIET is not set",