diff --git a/reactos/dll/win32/batt/batt.c b/reactos/dll/win32/batt/batt.c
index 0a46a395cd0..b5e6c4ed199 100644
--- a/reactos/dll/win32/batt/batt.c
+++ b/reactos/dll/win32/batt/batt.c
@@ -38,7 +38,8 @@ DWORD
 WINAPI
 BatteryClassCoInstaller(IN DI_FUNCTION InstallFunction,
                         IN HDEVINFO DeviceInfoSet,
-                        IN PSP_DEVINFO_DATA DeviceInfoData OPTIONAL)
+                        IN PSP_DEVINFO_DATA DeviceInfoData OPTIONAL,
+                        IN OUT PCOINSTALLER_CONTEXT_DATA Context)
 {
     switch (InstallFunction)
     {
diff --git a/reactos/dll/win32/batt/batt.spec b/reactos/dll/win32/batt/batt.spec
index efb53f5578a..6c68fb232a3 100644
--- a/reactos/dll/win32/batt/batt.spec
+++ b/reactos/dll/win32/batt/batt.spec
@@ -1,3 +1,3 @@
-@ stdcall BatteryClassCoInstaller(long ptr ptr)
+@ stdcall BatteryClassCoInstaller(long ptr ptr ptr)
 @ stdcall BatteryClassInstall(long ptr ptr)