diff --git a/reactos/dll/win32/setupapi/devinst.c b/reactos/dll/win32/setupapi/devinst.c
index f7698d5e7f9..a9fd83f241d 100644
--- a/reactos/dll/win32/setupapi/devinst.c
+++ b/reactos/dll/win32/setupapi/devinst.c
@@ -2314,12 +2314,6 @@ HDEVINFO WINAPI SetupDiGetClassDevsW(
 /***********************************************************************
  *              SetupDiGetClassDevsExW (SETUPAPI.@)
  */
-LONG
-SETUP_CreateDevicesList(
-    IN OUT struct DeviceInfoSet *list,
-    IN PCWSTR MachineName OPTIONAL,
-    IN CONST GUID *Class OPTIONAL,
-    IN PCWSTR Enumerator OPTIONAL);
 HDEVINFO WINAPI SetupDiGetClassDevsExW(
         CONST GUID *class,
         PCWSTR enumstr,
diff --git a/reactos/dll/win32/setupapi/setupapi.spec b/reactos/dll/win32/setupapi/setupapi.spec
index f5f567edd78..e61aa873b41 100644
--- a/reactos/dll/win32/setupapi/setupapi.spec
+++ b/reactos/dll/win32/setupapi/setupapi.spec
@@ -4,7 +4,7 @@
 @ stdcall CMP_Init_Detection(long)
 @ stdcall CMP_RegisterNotification(ptr ptr long ptr)
 @ stdcall CMP_Report_LogOn(long long)
-@ stub CMP_UnregisterNotification
+@ stdcall CMP_UnregisterNotification(ptr)
 @ stdcall CMP_WaitNoPendingInstallEvents(long)
 @ stub CMP_WaitServicesAvailable
 @ stdcall CM_Add_Empty_Log_Conf(ptr ptr long long)
diff --git a/reactos/dll/win32/setupapi/setupapi_private.h b/reactos/dll/win32/setupapi/setupapi_private.h
index 6c6bc339ac5..f527d7aa15a 100644
--- a/reactos/dll/win32/setupapi/setupapi_private.h
+++ b/reactos/dll/win32/setupapi/setupapi_private.h
@@ -283,6 +283,13 @@ CreateDeviceInfo(
     IN LPCGUID pClassGuid,
     OUT struct DeviceInfo **pDeviceInfo);
 
+LONG
+SETUP_CreateDevicesList(
+    IN OUT struct DeviceInfoSet *list,
+    IN PCWSTR MachineName OPTIONAL,
+    IN CONST GUID *Class OPTIONAL,
+    IN PCWSTR Enumerator OPTIONAL);
+
 /* driver.c */
 
 struct InfFileDetails *
diff --git a/reactos/dll/win32/setupapi/stubs.c b/reactos/dll/win32/setupapi/stubs.c
index 967ede4f8a3..0d13e76003e 100644
--- a/reactos/dll/win32/setupapi/stubs.c
+++ b/reactos/dll/win32/setupapi/stubs.c
@@ -203,4 +203,13 @@ CMP_RegisterNotification(
 }
 
 
-
+/***********************************************************************
+ *		CMP_UnregisterNotification(SETUPAPI.@)
+ */
+CONFIGRET
+WINAPI
+CMP_UnregisterNotification(IN HDEVNOTIFY handle)
+{
+    FIXME ("Stub %p\n", handle);
+    return CR_SUCCESS;
+}