diff --git a/reactos/drivers/input/kbdclass/kbdclass.h b/reactos/drivers/input/kbdclass/kbdclass.h
index a14e6bbef11..442807699fb 100644
--- a/reactos/drivers/input/kbdclass/kbdclass.h
+++ b/reactos/drivers/input/kbdclass/kbdclass.h
@@ -3,15 +3,7 @@
 #include <ntddkbd.h>
 #include <stdio.h>
 
-#if defined(__GNUC__)
-  NTSTATUS NTAPI
-  IoAttachDeviceToDeviceStackSafe(
-    IN PDEVICE_OBJECT SourceDevice,
-    IN PDEVICE_OBJECT TargetDevice,
-    OUT PDEVICE_OBJECT *AttachedToDeviceObject);
-#else
-  #error Unknown compiler!
-#endif
+#define MAX_PATH 260
 
 typedef enum
 {
diff --git a/reactos/drivers/input/mouclass/mouclass.h b/reactos/drivers/input/mouclass/mouclass.h
index 555b89d7f10..dd763691049 100644
--- a/reactos/drivers/input/mouclass/mouclass.h
+++ b/reactos/drivers/input/mouclass/mouclass.h
@@ -3,16 +3,7 @@
 #include <ntddmou.h>
 #include <stdio.h>
 
-#if defined(__GNUC__)
-  NTSTATUS NTAPI
-  IoAttachDeviceToDeviceStackSafe(
-    IN PDEVICE_OBJECT SourceDevice,
-    IN PDEVICE_OBJECT TargetDevice,
-    OUT PDEVICE_OBJECT *AttachedToDeviceObject);
-#else
-  #error Unknown compiler!
-#endif
-
+#define MAX_PATH 260
 typedef enum
 {
 	dsStopped,