diff --git a/src/fvhex2bin.c b/src/fvhex2bin.c
index c50e890..0d82de0 100644
--- a/src/fvhex2bin.c
+++ b/src/fvhex2bin.c
@@ -68,6 +68,6 @@ int main(int argc, char *argv[])
         return arg ? EXIT_FAILURE : EXIT_SUCCESS;
     }
 
-    hex2bin(infile, outfile);
+    heckfv_hex2bin(infile, outfile);
     return EXIT_SUCCESS;
 }
diff --git a/src/libfvhex2bin.c b/src/libfvhex2bin.c
index 7428607..389c001 100644
--- a/src/libfvhex2bin.c
+++ b/src/libfvhex2bin.c
@@ -22,25 +22,21 @@
  */
 
 #include "kk_ihex_read.h"
+#include "libfvhex2bin.h"
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
-#define AUTODETECT_ADDRESS (~0UL)
-
-
 static unsigned long line_number = 1L;
 static unsigned long file_position = 0L;
 static unsigned long address_offset = 0UL;
 static bool debug_enabled = 0;
 
-
-
 static FILE *infile = NULL;
 static FILE *outfile = NULL;
 
-int hex2bin(const char *infilename, const char *outfilename)
+int heckfv_hex2bin(char *infilename, char *outfilename)
 {
     int ret = 0;
     if (!(infile = fopen(infilename, "r"))) {
@@ -55,9 +51,7 @@ int hex2bin(const char *infilename, const char *outfilename)
     ihex_count_t count;
     char buf[256];
 
-    ihex_read_at_address(
-        &ihex,
-        (address_offset != AUTODETECT_ADDRESS) ? (ihex_address_t)address_offset : 0);
+    ihex_read_at_address(&ihex, (ihex_address_t)address_offset);
     while (fgets(buf, sizeof(buf), infile)) {
         count = (ihex_count_t)strlen(buf);
         ihex_read_bytes(&ihex, buf, count);
@@ -87,28 +81,8 @@ ihex_bool_t ihex_data_read(struct ihex_state *ihex, ihex_record_type_t type, ihe
     }
     if (type == IHEX_DATA_RECORD) {
         unsigned long address = (unsigned long)IHEX_LINEAR_ADDRESS(ihex);
-        if (address < address_offset) {
-            if (address_offset == AUTODETECT_ADDRESS) {
-                // autodetect initial address
-                address_offset = address;
-                if (debug_enabled) {
-                    (void)fprintf(stderr, "Address offset: 0x%lx\n", address_offset);
-                }
-            } else {
-                (void)fprintf(stderr, "Address underflow on line %lu\n", line_number);
-                exit(EXIT_FAILURE);
-            }
-        }
         address -= address_offset;
         if (address != file_position) {
-            if (debug_enabled) {
-                (void)fprintf(
-                    stderr,
-                    "Seeking from 0x%lx to 0x%lx on line %lu\n",
-                    file_position,
-                    address,
-                    line_number);
-            }
             if (outfile == stdout || fseek(outfile, (long)address, SEEK_SET)) {
                 if (file_position < address) {
                     // "seek" forward in stdout by writing NUL bytes
@@ -128,9 +102,6 @@ ihex_bool_t ihex_data_read(struct ihex_state *ihex, ihex_record_type_t type, ihe
         }
         file_position += ihex->length;
     } else if (type == IHEX_END_OF_FILE_RECORD) {
-        if (debug_enabled) {
-            (void)fprintf(stderr, "%lu bytes written\n", file_position);
-        }
         if (outfile != stdout) {
             (void)fclose(outfile);
         }
diff --git a/src/libfvhex2bin.h b/src/libfvhex2bin.h
index 52f9526..bede56a 100644
--- a/src/libfvhex2bin.h
+++ b/src/libfvhex2bin.h
@@ -1,3 +1,14 @@
-#pragma once
+#ifndef LIB_FV_HEX2BIN
+#define LIB_FV_HEX2BIN
 
-int hex2bin(const char *infilename, const char *outfile);
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    int heckfv_hex2bin(char *infilename, char *outfilename);
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif
\ No newline at end of file