diff --git a/proton b/proton
index c6a3738ff..37c16e4a3 100755
--- a/proton
+++ b/proton
@@ -16,6 +16,11 @@ import tarfile
 from filelock import FileLock
 from vkquery import is_vulkan_supported
 
+try:
+    from subprocess import DEVNULL  # Python 3.3
+except ImportError:
+    DEVNULL = open(os.devnull, 'wb')
+
 #To enable debug logging, copy "user_settings.sample.py" to "user_settings.py"
 #and edit it if needed.
 
@@ -429,14 +434,25 @@ else:
 
 check_environment("PROTON_USE_GALLIUM_NINE", "galliumnine")
 if "galliumnine" in config_opts:
-    run_wine([wine_path, "reg", "add", "HKEY_CURRENT_USER\\Software\\Wine\\DllRedirects", "/v", "d3d9", "/d", "d3d9-nine.dll", "/f"])
+    subprocess.call([wine_path, "reg", "add",
+        "HKEY_CURRENT_USER\\Software\\Wine\\DllRedirects",
+        "/v", "d3d9",
+        "/d", "d3d9-nine.dll",
+        "/f"], env=env, stdout=DEVNULL, stderr=DEVNULL)
     if "PROTON_GALLIUM_NINE_MODULEPATH" in os.environ:
         env["PROTON_GALLIUM_NINE_MODULEPATH"] = os.environ["PROTON_GALLIUM_NINE_MODULEPATH"]
     elif not "PROTON_GALLIUM_NINE_MODULEPATH" in env:
         env["PROTON_GALLIUM_NINE_MODULEPATH"] = "/usr/lib32/d3d/d3dadapter9.so.1:/usr/lib64/d3d/d3dadapter9.so.1"
-    run_wine([wine_path, "reg", "add", "HKEY_CURRENT_USER\\Software\\Wine\\Direct3DNine", "/v", "ModulePath", "/d", env["PROTON_GALLIUM_NINE_MODULEPATH"], "/f"])
+    subprocess.call([wine_path, "reg", "add",
+        "HKEY_CURRENT_USER\\Software\\Wine\\Direct3DNine",
+        "/v", "ModulePath",
+        "/d", env["PROTON_GALLIUM_NINE_MODULEPATH"],
+        "/f"], env=env, stdout=DEVNULL, stderr=DEVNULL)
 else:
-    run_wine([wine_path, "reg", "delete", "HKEY_CURRENT_USER\\Software\\Wine\\DllRedirects", "/v", "d3d9", "/f"])
+    subprocess.call([wine_path, "reg", "delete",
+        "HKEY_CURRENT_USER\\Software\\Wine\\DllRedirects",
+        "/v", "d3d9",
+        "/f"], env=env, stdout=DEVNULL, stderr=DEVNULL)
 
 ARCH_UNKNOWN=0
 ARCH_I386=1