diff --git a/lsteamclient/gen_wrapper.py b/lsteamclient/gen_wrapper.py
index a9c6e7fd..010689f9 100755
--- a/lsteamclient/gen_wrapper.py
+++ b/lsteamclient/gen_wrapper.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 #NOTE: If you make modifications here, consider whether they should
 #be duplicated in ../vrclient/gen_wrapper.py
@@ -502,7 +502,7 @@ for sdkver in sdk_versions:
 
         diagnostics = list(tu.diagnostics)
         if len(diagnostics) > 0:
-            print 'There were parse errors'
+            print('There were parse errors')
             pprint.pprint(diagnostics)
         else:
             children = list(tu.cursor.get_children())
diff --git a/proton b/proton
index e5e462ba..c9355372 100755
--- a/proton
+++ b/proton
@@ -1,4 +1,4 @@
-#!/usr/bin/env python3
+#!/usr/bin/env python
 
 #script to launch Wine with the correct environment
 
@@ -309,7 +309,8 @@ if "nod3d11" in config_opts:
         del dlloverrides["dxgi"]
 
 s = ""
-for dll, setting in dlloverrides.items():
+for dll in dlloverrides:
+    setting = dlloverrides[dll]
     if len(s) > 0:
         s = s + ";" + dll + "=" + setting
     else:
@@ -457,6 +458,13 @@ def run():
         else:
             run_wine([wine_path] + sys.argv[2:])
 
+if sys.version_info[0] == 2:
+    binary_stdout = sys.stdout
+elif sys.version_info[0] == 3:
+    binary_stdout = sys.stdout.buffer
+else:
+    raise Exception("Unsuported python version")
+
 #determine mode
 if sys.argv[1] == "run":
     #start target app
@@ -469,11 +477,11 @@ elif sys.argv[1] == "waitforexitandrun":
 elif sys.argv[1] == "getcompatpath":
     #linux -> windows path
     path = subprocess.check_output([wine_path, "winepath", "-w", sys.argv[2]], env=env, stderr=lfile)
-    sys.stdout.write(path.decode('utf-8'))
+    binary_stdout.write(path)
 elif sys.argv[1] == "getnativepath":
     #windows -> linux path
     path = subprocess.check_output([wine_path, "winepath", sys.argv[2]], env=env, stderr=lfile)
-    sys.stdout.write(path.decode('utf-8'))
+    binary_stdout.write(path)
 else:
     log("Need a verb.")
     sys.exit(1)
diff --git a/user_settings.sample.py b/user_settings.sample.py
index 24fa339c..a3ee5331 100755
--- a/user_settings.sample.py
+++ b/user_settings.sample.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2.7
+#!/usr/bin/env python
 
 #to enable these settings, name this file "user_settings.py"
 
diff --git a/vrclient_x64/gen_wrapper.py b/vrclient_x64/gen_wrapper.py
index 0b196ee5..ad28fb4d 100755
--- a/vrclient_x64/gen_wrapper.py
+++ b/vrclient_x64/gen_wrapper.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python2
+#!/usr/bin/env python
 
 #NOTE: If you make modifications here, consider whether they should
 #be duplicated in ../lsteamclient/gen_wrapper.py
@@ -403,7 +403,7 @@ def get_capi_thunk_params(method):
     def toBOOL(x):
         return "TRUE" if x else "FALSE"
     returns_record = method.result_type.get_canonical().kind == clang.cindex.TypeKind.RECORD
-    param_types = map(lambda x: x.type, get_params(method))
+    param_types = [x.type for x in get_params(method)]
     if returns_record:
         param_types.insert(0, method.result_type)
     param_count = len(param_types)
@@ -970,7 +970,7 @@ for sdkver in sdk_versions:
 
         diagnostics = list(tu.diagnostics)
         if len(diagnostics) > 0:
-            print 'There were parse errors'
+            print('There were parse errors')
             pprint.pprint(diagnostics)
         else:
             children = list(tu.cursor.get_children())