diff --git a/src/lib/openjp2/fix.h b/src/lib/openjp2/fix.h
deleted file mode 100644
index bcb2acb5..00000000
--- a/src/lib/openjp2/fix.h
+++ /dev/null
@@ -1,64 +0,0 @@
-/*
- * Copyright (c) 2002-2007, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
- * Copyright (c) 2002-2007, Professor Benoit Macq
- * Copyright (c) 2001-2003, David Janssens
- * Copyright (c) 2002-2003, Yannick Verschueren
- * Copyright (c) 2003-2007, Francois-Olivier Devaux and Antonin Descampe
- * Copyright (c) 2005, Herve Drolon, FreeImage Team
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-#ifndef __FIX_H
-#define __FIX_H
-
-#if defined(_MSC_VER) || defined(__BORLANDC__)
-#define int64 __int64
-#else
-#define int64 long long
-#endif
-
-/**
-@file fix.h
-@brief Implementation of operations of specific multiplication (FIX)
-
-The functions in FIX.H have for goal to realize specific multiplication.
-*/
-
-/** @defgroup FIX FIX - Implementation of operations of specific multiplication */
-/*@{*/
-
-/**
-Multiply two fixed-precision rational numbers.
-@param a
-@param b
-@return Returns a * b
-*/
-static INLINE int fix_mul(int a, int b) {
-    int64 temp = (int64) a * (int64) b ;
-    temp += temp & 4096;
-    return (int) (temp >> 13) ;
-}
-
-/*@}*/
-
-#endif /* __FIX_H */
diff --git a/src/lib/openjp2/int.h b/src/lib/openjp2/int.h
index 57fec99d..6d71b105 100644
--- a/src/lib/openjp2/int.h
+++ b/src/lib/openjp2/int.h
@@ -47,7 +47,7 @@ The functions in INT.H have for goal to realize operations on integers.
 Get the minimum of two integers
 @return Returns a if a < b else b
 */
-static INLINE int int_min(int a, int b) {
+static INLINE OPJ_INT32 int_min(OPJ_INT32 a, OPJ_INT32 b) {
 	return a < b ? a : b;
 }
 
@@ -63,7 +63,7 @@ static INLINE OPJ_UINT32 uint_min(OPJ_UINT32 a, OPJ_UINT32 b) {
 Get the maximum of two integers
 @return Returns a if a > b else b
 */
-static INLINE int int_max(int a, int b) {
+static INLINE OPJ_INT32 int_max(OPJ_INT32 a, OPJ_INT32 b) {
 	return (a > b) ? a : b;
 }
 
@@ -84,7 +84,7 @@ Clamp an integer inside an interval
 <li>Returns min if (a < min) 
 </ul>
 */
-static INLINE int int_clamp(int a, int min, int max) {
+static INLINE OPJ_INT32 int_clamp(OPJ_INT32 a, OPJ_INT32 min, OPJ_INT32 max) {
 	if (a < min)
 		return min;
 	if (a > max)
@@ -94,14 +94,14 @@ static INLINE int int_clamp(int a, int min, int max) {
 /**
 @return Get absolute value of integer
 */
-static INLINE int int_abs(int a) {
+static INLINE OPJ_INT32 int_abs(OPJ_INT32 a) {
 	return a < 0 ? -a : a;
 }
 /**
 Divide an integer and round upwards
 @return Returns a divided by b
 */
-static INLINE int int_ceildiv(int a, int b) {
+static INLINE OPJ_INT32 int_ceildiv(OPJ_INT32 a, OPJ_INT32 b) {
 	return (a + b - 1) / b;
 }
 
@@ -117,22 +117,22 @@ static INLINE OPJ_UINT32  uint_ceildiv(OPJ_UINT32  a, OPJ_UINT32  b) {
 Divide an integer by a power of 2 and round upwards
 @return Returns a divided by 2^b
 */
-static INLINE int int_ceildivpow2(int a, int b) {
+static INLINE OPJ_INT32 int_ceildivpow2(OPJ_INT32 a, OPJ_INT32 b) {
 	return (a + (1 << b) - 1) >> b;
 }
 /**
 Divide an integer by a power of 2 and round downwards
 @return Returns a divided by 2^b
 */
-static INLINE int int_floordivpow2(int a, int b) {
+static INLINE OPJ_INT32 int_floordivpow2(OPJ_INT32 a, OPJ_INT32 b) {
 	return a >> b;
 }
 /**
 Get logarithm of an integer and round downwards
 @return Returns log2(a)
 */
-static INLINE int int_floorlog2(int a) {
-	int l;
+static INLINE OPJ_INT32 int_floorlog2(OPJ_INT32 a) {
+	OPJ_INT32 l;
 	for (l = 0; a > 1; l++) {
 		a >>= 1;
 	}
@@ -151,6 +151,18 @@ static INLINE OPJ_UINT32  uint_floorlog2(OPJ_UINT32  a) {
 	return l;
 }
 
+/**
+Multiply two fixed-precision rational numbers.
+@param a
+@param b
+@return Returns a * b
+*/
+static INLINE OPJ_INT32 fix_mul(OPJ_INT32 a, OPJ_INT32 b) {
+    OPJ_INT64 temp = (OPJ_INT64) a * (OPJ_INT64) b ;
+    temp += temp & 4096;
+    return (int) (temp >> 13) ;
+}
+
 /* ----------------------------------------------------------------------- */
 /*@}*/
 
diff --git a/src/lib/openjp2/opj_includes.h b/src/lib/openjp2/opj_includes.h
index 98a5b86b..472db3d2 100644
--- a/src/lib/openjp2/opj_includes.h
+++ b/src/lib/openjp2/opj_includes.h
@@ -168,7 +168,6 @@ static INLINE long lrintf(float f){
 #include "t2.h"
 #include "mct.h"
 #include "int.h"
-#include "fix.h"
 
 #include "cidx_manager.h"
 #include "indexbox_manager.h"