diff --git a/proton b/proton
index 541324de..acb4c1c2 100755
--- a/proton
+++ b/proton
@@ -173,7 +173,16 @@ if not vr_runtime is None:
     except:
         pass
 
-#start target app
-run_wine([wine_path] + sys.argv[1:])
+#determine mode
+if sys.argv[1] == "run":
+    #start target app
+    run_wine([wine_path] + sys.argv[2:])
+elif sys.argv[1] == "translatepath":
+    #get windows path equivalent
+    path = subprocess.check_output([wine_path, "winepath", "-w", sys.argv[2]], env=env, stderr=open("/dev/null", "w"))
+    stdout.write(path)
+else:
+    #???
+    sys.exit(1)
 
 sys.exit(0)
diff --git a/toolmanifest.vdf b/toolmanifest.vdf
index 26ef1c28..1be3703c 100644
--- a/toolmanifest.vdf
+++ b/toolmanifest.vdf
@@ -1,4 +1,5 @@
 "manifest"
 {
-  "commandline" "/proton"
+  "commandline" "/proton run"
+  "commandline_translatepath" = "/proton winepath"
 }