diff --git a/dll/steam_controller.h b/dll/steam_controller.h
index aa2fe52..c316c80 100644
--- a/dll/steam_controller.h
+++ b/dll/steam_controller.h
@@ -746,7 +746,10 @@ void SetLEDColor( ControllerHandle_t controllerHandle, uint8 nColorR, uint8 nCol
 int GetGamepadIndexForController( ControllerHandle_t ulControllerHandle )
 {
     PRINT_DEBUG("Steam_Controller::GetGamepadIndexForController\n");
-    return 0;
+    auto controller = controllers.find(ulControllerHandle);
+    if (controller == controllers.end()) return -1;
+
+    return ulControllerHandle - 1;
 }
 
 
@@ -754,7 +757,10 @@ int GetGamepadIndexForController( ControllerHandle_t ulControllerHandle )
 ControllerHandle_t GetControllerForGamepadIndex( int nIndex )
 {
     PRINT_DEBUG("Steam_Controller::GetControllerForGamepadIndex\n");
-    return 0;
+    ControllerHandle_t out = nIndex + 1;
+    auto controller = controllers.find(out);
+    if (controller == controllers.end()) return 0;
+    return out;
 }