diff --git a/umu/umu_run.py b/umu/umu_run.py
index 3539c9b23..205083b7a 100755
--- a/umu/umu_run.py
+++ b/umu/umu_run.py
@@ -279,6 +279,12 @@ def set_env(
         env["WINESERVER"] = proton.wineserver_bin
         env["WINETRICKS_LATEST_VERSION_CHECK"] = "disabled"
         env["LD_PRELOAD"] = ""
+        env["WINEDLLPATH"] = ":".join(
+            [
+                Path(proton.lib_dir, "wine").as_posix(),
+                Path(proton.lib64_dir, "wine").as_posix(),
+            ]
+        )
         env["WINETRICKS_SUPER_QUIET"] = (
             "" if os.environ.get("UMU_LOG") == "debug" else "1"
         )