diff --git a/CMakeLists.txt b/CMakeLists.txt
index 656cfe74bd..35f586c1ff 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -359,7 +359,6 @@ install(FILES
     src/ccutil/helpers.h
     src/ccutil/host.h
     src/ccutil/memry.h
-    src/ccutil/ndminx.h
     src/ccutil/params.h
     src/ccutil/ocrclass.h
     src/ccutil/platform.h
diff --git a/src/ccmain/linerec.cpp b/src/ccmain/linerec.cpp
index 858fbd6405..081bed0845 100644
--- a/src/ccmain/linerec.cpp
+++ b/src/ccmain/linerec.cpp
@@ -25,7 +25,6 @@
 #include "lstmrecognizer.h"
 #include "recodebeam.h"
 #endif
-#include "ndminx.h"
 #include "pageres.h"
 #include "tprintf.h"
 
diff --git a/src/ccstruct/blobs.cpp b/src/ccstruct/blobs.cpp
index ebe97a8e16..2136755616 100644
--- a/src/ccstruct/blobs.cpp
+++ b/src/ccstruct/blobs.cpp
@@ -38,7 +38,6 @@
 #include "emalloc.h"
 #include "helpers.h"
 #include "linlsq.h"
-#include "ndminx.h"
 #include "normalis.h"
 #include "ocrblock.h"
 #include "ocrrow.h"
diff --git a/src/ccstruct/detlinefit.cpp b/src/ccstruct/detlinefit.cpp
index 91c2f9c43c..972dba9b1a 100644
--- a/src/ccstruct/detlinefit.cpp
+++ b/src/ccstruct/detlinefit.cpp
@@ -19,7 +19,6 @@
 
 #include "detlinefit.h"
 #include "statistc.h"
-#include "ndminx.h"
 #include "tprintf.h"
 
 #include <algorithm>
diff --git a/src/ccstruct/points.cpp b/src/ccstruct/points.cpp
index 3efd4f9c73..dcc31124c3 100644
--- a/src/ccstruct/points.cpp
+++ b/src/ccstruct/points.cpp
@@ -24,7 +24,6 @@
 #include <algorithm>
 #include <stdlib.h>
 #include "helpers.h"
-#include "ndminx.h"
 #include "serialis.h"
 #include "points.h"
 
diff --git a/src/ccstruct/rect.h b/src/ccstruct/rect.h
index 3e46f4ef58..71c60ef40e 100644
--- a/src/ccstruct/rect.h
+++ b/src/ccstruct/rect.h
@@ -22,7 +22,6 @@
 
 #include <cmath>
 #include "points.h"
-#include "ndminx.h"
 #include "scrollview.h"
 #include "strngs.h"
 #include "tprintf.h"
diff --git a/src/ccutil/Makefile.am b/src/ccutil/Makefile.am
index 7c1dc463b9..2624d9ae7c 100644
--- a/src/ccutil/Makefile.am
+++ b/src/ccutil/Makefile.am
@@ -13,7 +13,7 @@ endif
 
 pkginclude_HEADERS = \
     genericvector.h helpers.h host.h memry.h \
-    ndminx.h ocrclass.h platform.h serialis.h strngs.h \
+    ocrclass.h platform.h serialis.h strngs.h \
     tesscallback.h unichar.h
 
 noinst_HEADERS = \
diff --git a/src/ccutil/bitvector.cpp b/src/ccutil/bitvector.cpp
index 072de9dfa1..4248c9e160 100644
--- a/src/ccutil/bitvector.cpp
+++ b/src/ccutil/bitvector.cpp
@@ -22,7 +22,6 @@
 #include "bitvector.h"
 #include <string.h>
 #include "helpers.h"
-#include "ndminx.h"
 
 #include <algorithm>
 
diff --git a/src/ccutil/genericvector.h b/src/ccutil/genericvector.h
index e1b16b0fb9..d15add451a 100644
--- a/src/ccutil/genericvector.h
+++ b/src/ccutil/genericvector.h
@@ -27,7 +27,6 @@
 
 #include "tesscallback.h"
 #include "helpers.h"
-#include "ndminx.h"
 #include "serialis.h"
 #include "strngs.h"
 
diff --git a/src/ccutil/ndminx.h b/src/ccutil/ndminx.h
deleted file mode 100644
index 9eee76c028..0000000000
--- a/src/ccutil/ndminx.h
+++ /dev/null
@@ -1,31 +0,0 @@
-/**********************************************************************
- * File:        ndminx.h  (Formerly ndminmax.h)
- * Description: Extended ascii chars
- * Author:      Phil Cheatle
- * Created:     Mon Mar 29 14:46:01 BST 1993
- *
- * (C) Copyright 1991, Hewlett-Packard Ltd.
- ** Licensed under the Apache License, Version 2.0 (the "License");
- ** you may not use this file except in compliance with the License.
- ** You may obtain a copy of the License at
- ** http://www.apache.org/licenses/LICENSE-2.0
- ** Unless required by applicable law or agreed to in writing, software
- ** distributed under the License is distributed on an "AS IS" BASIS,
- ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- ** See the License for the specific language governing permissions and
- ** limitations under the License.
- *
- **********************************************************************/
-
-#ifndef           NDMINX_H
-#define           NDMINX_H
-
-#ifndef MAX
-#define MAX(x,y)    (((x) >= (y))?(x):(y))
-#endif
-
-#ifndef MIN
-#define MIN(x,y)    (((x) <= (y))?(x):(y))
-#endif
-
-#endif
diff --git a/src/classify/adaptmatch.cpp b/src/classify/adaptmatch.cpp
index ec45e1e9a8..7b0b8a0323 100644
--- a/src/classify/adaptmatch.cpp
+++ b/src/classify/adaptmatch.cpp
@@ -42,7 +42,6 @@
 #include "intfx.h"
 #include "intproto.h"
 #include "mfoutline.h"
-#include "ndminx.h"
 #include "normfeat.h"
 #include "normmatch.h"
 #include "outfeat.h"
diff --git a/src/classify/errorcounter.cpp b/src/classify/errorcounter.cpp
index 5283a0e539..65b36b7f6d 100644
--- a/src/classify/errorcounter.cpp
+++ b/src/classify/errorcounter.cpp
@@ -18,7 +18,6 @@
 #include "errorcounter.h"
 
 #include "fontinfo.h"
-#include "ndminx.h"
 #include "sampleiterator.h"
 #include "shapeclassifier.h"
 #include "shapetable.h"
diff --git a/src/classify/intfx.cpp b/src/classify/intfx.cpp
index ce3801bb19..885ff8512c 100644
--- a/src/classify/intfx.cpp
+++ b/src/classify/intfx.cpp
@@ -29,7 +29,6 @@
 #include "helpers.h"
 #include "intmatcher.h"
 #include "linlsq.h"
-#include "ndminx.h"
 #include "normalis.h"
 #include "statistc.h"
 #include "trainingsample.h"
diff --git a/src/classify/intproto.cpp b/src/classify/intproto.cpp
index ced8c57983..f61290b3ce 100644
--- a/src/classify/intproto.cpp
+++ b/src/classify/intproto.cpp
@@ -36,7 +36,6 @@
 #include "helpers.h"
 #include "intproto.h"
 #include "mfoutline.h"
-#include "ndminx.h"
 #include "picofeat.h"
 #include "points.h"
 #include "shapetable.h"
diff --git a/src/dict/permdawg.cpp b/src/dict/permdawg.cpp
index 7b5f1f6ec2..1103b54db8 100644
--- a/src/dict/permdawg.cpp
+++ b/src/dict/permdawg.cpp
@@ -29,7 +29,6 @@
 #include "cutil.h"
 #include "dawg.h"
 #include "globals.h"
-#include "ndminx.h"
 #include "stopper.h"
 #include "tprintf.h"
 #include "params.h"
diff --git a/src/textord/alignedblob.cpp b/src/textord/alignedblob.cpp
index b177c7c334..63b21eff38 100644
--- a/src/textord/alignedblob.cpp
+++ b/src/textord/alignedblob.cpp
@@ -22,7 +22,6 @@
 #endif
 
 #include "alignedblob.h"
-#include "ndminx.h"
 
 #include <algorithm>
 
diff --git a/src/textord/cjkpitch.cpp b/src/textord/cjkpitch.cpp
index 2b948e87e6..7c2613bb62 100644
--- a/src/textord/cjkpitch.cpp
+++ b/src/textord/cjkpitch.cpp
@@ -19,7 +19,6 @@
 ///////////////////////////////////////////////////////////////////////
 #include "cjkpitch.h"
 #include "genericvector.h"
-#include "ndminx.h"
 #include "topitch.h"
 #include "tovars.h"
 
diff --git a/src/textord/colpartition.h b/src/textord/colpartition.h
index 2f0b201d81..c712adda1b 100644
--- a/src/textord/colpartition.h
+++ b/src/textord/colpartition.h
@@ -23,7 +23,6 @@
 
 #include "bbgrid.h"
 #include "blobbox.h"       // For BlobRegionType.
-#include "ndminx.h"
 #include "ocrblock.h"
 #include "rect.h"           // For TBOX.
 #include "scrollview.h"
diff --git a/src/textord/colpartitionset.cpp b/src/textord/colpartitionset.cpp
index cc4802dad5..f1b301e567 100644
--- a/src/textord/colpartitionset.cpp
+++ b/src/textord/colpartitionset.cpp
@@ -23,7 +23,6 @@
 #endif
 
 #include "colpartitionset.h"
-#include "ndminx.h"
 #include "workingpartset.h"
 #include "tablefind.h"
 
diff --git a/src/textord/imagefind.cpp b/src/textord/imagefind.cpp
index 142d88feb5..6c8d9e6d46 100644
--- a/src/textord/imagefind.cpp
+++ b/src/textord/imagefind.cpp
@@ -25,7 +25,6 @@
 #include "imagefind.h"
 #include "colpartitiongrid.h"
 #include "linlsq.h"
-#include "ndminx.h"
 #include "statistc.h"
 #include "params.h"
 
diff --git a/src/textord/tabfind.cpp b/src/textord/tabfind.cpp
index fb0cac8e9c..4744dd5042 100644
--- a/src/textord/tabfind.cpp
+++ b/src/textord/tabfind.cpp
@@ -27,7 +27,6 @@
 #include "colpartitiongrid.h"
 #include "detlinefit.h"
 #include "linefind.h"
-#include "ndminx.h"
 
 #include <algorithm>
 
diff --git a/src/textord/tospace.cpp b/src/textord/tospace.cpp
index 6b2f2a498e..96499df86d 100644
--- a/src/textord/tospace.cpp
+++ b/src/textord/tospace.cpp
@@ -26,7 +26,6 @@
  **********************************************************************/
 
 #include "drawtord.h"
-#include "ndminx.h"
 #include "statistc.h"
 #include "textord.h"
 #include "tovars.h"
diff --git a/src/training/boxchar.cpp b/src/training/boxchar.cpp
index 62f23ef38b..2120cbeaea 100644
--- a/src/training/boxchar.cpp
+++ b/src/training/boxchar.cpp
@@ -28,7 +28,6 @@
 
 #include "fileio.h"
 #include "genericvector.h"
-#include "ndminx.h"
 #include "normstrngs.h"
 #include "tprintf.h"
 #include "unicharset.h"
diff --git a/src/training/commontraining.cpp b/src/training/commontraining.cpp
index 6aad706490..cf8031e5ad 100644
--- a/src/training/commontraining.cpp
+++ b/src/training/commontraining.cpp
@@ -30,7 +30,6 @@
 #include "intfeaturespace.h"
 #include "mastertrainer.h"
 #include "mf.h"
-#include "ndminx.h"
 #include "oldlist.h"
 #include "params.h"
 #include "shapetable.h"
diff --git a/src/training/mergenf.cpp b/src/training/mergenf.cpp
index 92562a918b..97179fd84a 100644
--- a/src/training/mergenf.cpp
+++ b/src/training/mergenf.cpp
@@ -22,7 +22,6 @@
 #include "cluster.h"
 #include "oldlist.h"
 #include "protos.h"
-#include "ndminx.h"
 #include "ocrfeatures.h"
 #include "const.h"
 #include "featdefs.h"
diff --git a/src/training/mftraining.cpp b/src/training/mftraining.cpp
index 8230222611..ec94db19ef 100644
--- a/src/training/mftraining.cpp
+++ b/src/training/mftraining.cpp
@@ -55,7 +55,6 @@
 #include "mastertrainer.h"
 #include "mergenf.h"
 #include "mf.h"
-#include "ndminx.h"
 #include "ocrfeatures.h"
 #include "oldlist.h"
 #include "protos.h"
diff --git a/src/wordrec/gradechop.cpp b/src/wordrec/gradechop.cpp
index 79a727d0a9..8dc6edb950 100644
--- a/src/wordrec/gradechop.cpp
+++ b/src/wordrec/gradechop.cpp
@@ -28,7 +28,6 @@
 #include "gradechop.h"
 #include "wordrec.h"
 #include "chop.h"
-#include "ndminx.h"
 #include <algorithm>
 #include <cmath>
 
diff --git a/src/wordrec/gradechop.h b/src/wordrec/gradechop.h
index 01e5bf2641..efaa10ca00 100644
--- a/src/wordrec/gradechop.h
+++ b/src/wordrec/gradechop.h
@@ -30,7 +30,6 @@
               I n c l u d e s
 ----------------------------------------------------------------------*/
 #include "seam.h"
-#include "ndminx.h"
 
 /*----------------------------------------------------------------------
               M a c r o s
diff --git a/src/wordrec/pieces.cpp b/src/wordrec/pieces.cpp
index 8c2409fc26..76434e65c6 100644
--- a/src/wordrec/pieces.cpp
+++ b/src/wordrec/pieces.cpp
@@ -29,7 +29,6 @@
 #include "blobs.h"
 #include "helpers.h"
 #include "matrix.h"
-#include "ndminx.h"
 #include "ratngs.h"
 #include "seam.h"
 #include "wordrec.h"