diff --git a/backend/hpsj5s_int.h b/backend/hpsj5s_int.h
deleted file mode 100644
index 52ffba452..000000000
--- a/backend/hpsj5s_int.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
-        HP ScanJet 5s kernel module interface.
-        Wrote by: Max Vorobiev.
-*/
-
-#ifndef __HPSJ5S_KERNEL_MODULE_INTERFACE__
-#define __HPSJ5S_KERNEL_MODULE_INTERFACE__
-
-/*
-        Scanner registers (not all - some of them i cann't identify...)
-*/
-
-/*Here we place function code to perform*/
-#define REGISTER_FUNCTION_CODE          0x70
-/*Here we place parameter for function*/
-#define REGISTER_FUNCTION_PARAMETER     0x60
-
-/*
-        Here we define addresses, used for reading values:
-*/
-
-/*this address used to get results (image strips, function result codes, etc.)*/
-#define ADDRESS_RESULT                  0x20
-
-/*
-        Scanner functions (not all - some of them i cann't identify...)
-*/
-
-/*Change scanner hardware state: use FLAGS_HW_xxxx for parameters*/
-#define FUNCTION_SETUP_HARDWARE         0xA0
-
-/*Hardware control flags:*/
-#define FLAGS_HW_MOTOR_READY		0x1	/*Set this flag and non-zero speed to start rotation */
-#define FLAGS_HW_LAMP_ON		0x2	/*Set this flag to turn on lamp */
-#define FLAGS_HW_INDICATOR_OFF		0x4	/*Set[Clean] this flag to turn off[on] green light indicator */
-
-/******************Code for kernel module operations******************************/
-
-typedef enum
-{ OP_WRITE_ADDRESS,		/*Output byte in address mode */
-  OP_WRITE_DATA_BYTE,		/*Output byte in data mode */
-  OP_WRITE_SCANER_REGISTER,	/*Output one byte in address mode and one byte in data mode */
-  OP_CALL_FUNCTION_WITH_PARAMETER	/*Output first value via 0x70 address, second value via 0x60 */
-}
-Op_Code;
-
-typedef struct
-{
-  unsigned char Address;
-}
-strWriteAddress;
-
-typedef struct
-{
-  unsigned char Data;
-}
-strWriteDataByte;
-
-typedef struct
-{
-  unsigned char Address;
-  unsigned char Data;
-}
-strWriteScannerRegister;
-
-typedef struct
-{
-  unsigned char Function;
-  unsigned char Parameter;
-}
-strFunctionWithParameter;
-
-typedef struct
-{
-  Op_Code Code;			/*Operation to perform */
-  union
-  {
-    strWriteAddress WrAddr;
-    strWriteDataByte WrData;
-    strWriteScannerRegister WrScannerReg;
-    strFunctionWithParameter FuncParam;
-  }
-  Parameters;
-}
-strOperationBlock;
-
-#endif