diff --git a/djpeg.c b/djpeg.c
index b30a5e43..dfd6d900 100644
--- a/djpeg.c
+++ b/djpeg.c
@@ -647,7 +647,7 @@ main(int argc, char **argv)
         fprintf(stderr, "%s: memory allocation failure\n", progname);
         exit(EXIT_FAILURE);
       }
-      nbytes = JFREAD(input_file, &inbuffer[insize], INPUT_BUF_SIZE);
+      nbytes = fread(&inbuffer[insize], 1, INPUT_BUF_SIZE, input_file);
       if (nbytes < INPUT_BUF_SIZE && ferror(input_file)) {
         if (file_index < argc)
           fprintf(stderr, "%s: can't read from %s\n", progname,
diff --git a/jdatadst.c b/jdatadst.c
index fe8c0543..6b4fed23 100644
--- a/jdatadst.c
+++ b/jdatadst.c
@@ -111,7 +111,7 @@ empty_output_buffer(j_compress_ptr cinfo)
 {
   my_dest_ptr dest = (my_dest_ptr)cinfo->dest;
 
-  if (JFWRITE(dest->outfile, dest->buffer, OUTPUT_BUF_SIZE) !=
+  if (fwrite(dest->buffer, 1, OUTPUT_BUF_SIZE, dest->outfile) !=
       (size_t)OUTPUT_BUF_SIZE)
     ERREXIT(cinfo, JERR_FILE_WRITE);
 
@@ -170,7 +170,7 @@ term_destination(j_compress_ptr cinfo)
 
   /* Write any data remaining in the buffer */
   if (datacount > 0) {
-    if (JFWRITE(dest->outfile, dest->buffer, datacount) != datacount)
+    if (fwrite(dest->buffer, 1, datacount, dest->outfile) != datacount)
       ERREXIT(cinfo, JERR_FILE_WRITE);
   }
   fflush(dest->outfile);
diff --git a/jdatasrc.c b/jdatasrc.c
index eadb4a2c..e36a30d8 100644
--- a/jdatasrc.c
+++ b/jdatasrc.c
@@ -5,7 +5,7 @@
  * Copyright (C) 1994-1996, Thomas G. Lane.
  * Modified 2009-2011 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2013, 2016, D. R. Commander.
+ * Copyright (C) 2013, 2016, 2022, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -104,7 +104,7 @@ fill_input_buffer(j_decompress_ptr cinfo)
   my_src_ptr src = (my_src_ptr)cinfo->src;
   size_t nbytes;
 
-  nbytes = JFREAD(src->infile, src->buffer, INPUT_BUF_SIZE);
+  nbytes = fread(src->buffer, 1, INPUT_BUF_SIZE, src->infile);
 
   if (nbytes <= 0) {
     if (src->start_of_file)     /* Treat empty input file as fatal error */
diff --git a/jinclude.h b/jinclude.h
index 23248767..6ed982d3 100644
--- a/jinclude.h
+++ b/jinclude.h
@@ -34,14 +34,3 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-
-/*
- * The modules that use fread() and fwrite() always invoke them through
- * these macros.  On some systems you may need to twiddle the argument casts.
- * CAUTION: argument order is different from underlying functions!
- */
-
-#define JFREAD(file, buf, sizeofbuf) \
-  ((size_t)fread((void *)(buf), (size_t)1, (size_t)(sizeofbuf), (file)))
-#define JFWRITE(file, buf, sizeofbuf) \
-  ((size_t)fwrite((const void *)(buf), (size_t)1, (size_t)(sizeofbuf), (file)))
diff --git a/rdbmp.c b/rdbmp.c
index 0124f4d2..433ebe2e 100644
--- a/rdbmp.c
+++ b/rdbmp.c
@@ -39,7 +39,7 @@ typedef unsigned char U_CHAR;
 
 
 #define ReadOK(file, buffer, len) \
-  (JFREAD(file, buffer, len) == ((size_t)(len)))
+  (fread(buffer, 1, len, file) == ((size_t)(len)))
 
 static int alpha_index[JPEG_NUMCS] = {
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3, 3, 0, 0, -1
diff --git a/rdgif.c b/rdgif.c
index 36f0929f..bdf74012 100644
--- a/rdgif.c
+++ b/rdgif.c
@@ -5,7 +5,7 @@
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * Modified 2019 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2021, D. R. Commander.
+ * Copyright (C) 2021-2022, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -45,7 +45,7 @@ typedef unsigned char U_CHAR;
 
 
 #define ReadOK(file, buffer, len) \
-  (JFREAD(file, buffer, len) == ((size_t)(len)))
+  (fread(buffer, 1, len, file) == ((size_t)(len)))
 
 
 #define MAXCOLORMAPSIZE  256    /* max # of colors in a GIF colormap */
diff --git a/rdppm.c b/rdppm.c
index 439eefb6..409497d6 100644
--- a/rdppm.c
+++ b/rdppm.c
@@ -48,7 +48,7 @@ typedef unsigned char U_CHAR;
 
 
 #define ReadOK(file, buffer, len) \
-  (JFREAD(file, buffer, len) == ((size_t)(len)))
+  (fread(buffer, 1, len, file) == ((size_t)(len)))
 
 static int alpha_index[JPEG_NUMCS] = {
   -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 3, 3, 0, 0, -1
diff --git a/rdtarga.c b/rdtarga.c
index 8f2d0316..3ed7eb34 100644
--- a/rdtarga.c
+++ b/rdtarga.c
@@ -5,7 +5,7 @@
  * Copyright (C) 1991-1996, Thomas G. Lane.
  * Modified 2017 by Guido Vollbeding.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2018, 2021, D. R. Commander.
+ * Copyright (C) 2018, 2021-2022, D. R. Commander.
  * For conditions of distribution and use, see the accompanying README.ijg
  * file.
  *
@@ -33,7 +33,7 @@ typedef unsigned char U_CHAR;
 
 
 #define ReadOK(file, buffer, len) \
-  (JFREAD(file, buffer, len) == ((size_t)(len)))
+  (fread(buffer, 1, len, file) == ((size_t)(len)))
 
 
 /* Private version of data source object */
diff --git a/wrbmp.c b/wrbmp.c
index 56a53a44..45fff684 100644
--- a/wrbmp.c
+++ b/wrbmp.c
@@ -165,7 +165,7 @@ put_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     *outptr++ = 0;
 
   if (!dest->use_inversion_array)
-    (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->row_width);
+    fwrite(dest->iobuffer, 1, dest->row_width, dest->pub.output_file);
 }
 
 METHODDEF(void)
@@ -200,7 +200,7 @@ put_gray_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     *outptr++ = 0;
 
   if (!dest->use_inversion_array)
-    (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->row_width);
+    fwrite(dest->iobuffer, 1, dest->row_width, dest->pub.output_file);
 }
 
 
@@ -281,9 +281,9 @@ write_bmp_header(j_decompress_ptr cinfo, bmp_dest_ptr dest)
   PUT_2B(bmpinfoheader, 32, cmap_entries); /* biClrUsed */
   /* we leave biClrImportant = 0 */
 
-  if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t)14)
+  if (fwrite(bmpfileheader, 1, 14, dest->pub.output_file) != (size_t)14)
     ERREXIT(cinfo, JERR_FILE_WRITE);
-  if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t)40)
+  if (fwrite(bmpinfoheader, 1, 40, dest->pub.output_file) != (size_t)40)
     ERREXIT(cinfo, JERR_FILE_WRITE);
 
   if (cmap_entries > 0)
@@ -342,9 +342,9 @@ write_os2_header(j_decompress_ptr cinfo, bmp_dest_ptr dest)
   PUT_2B(bmpcoreheader, 8, 1);  /* bcPlanes - must be 1 */
   PUT_2B(bmpcoreheader, 10, bits_per_pixel); /* bcBitCount */
 
-  if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t)14)
+  if (fwrite(bmpfileheader, 1, 14, dest->pub.output_file) != (size_t)14)
     ERREXIT(cinfo, JERR_FILE_WRITE);
-  if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t)12)
+  if (fwrite(bmpcoreheader, 1, 12, dest->pub.output_file) != (size_t)12)
     ERREXIT(cinfo, JERR_FILE_WRITE);
 
   if (cmap_entries > 0)
@@ -456,7 +456,7 @@ finish_output_bmp(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo)
         ((j_common_ptr)cinfo, dest->whole_image, row - 1, (JDIMENSION)1,
          FALSE);
       data_ptr = image_ptr[0];
-      (void)JFWRITE(outfile, data_ptr, dest->row_width);
+      fwrite(data_ptr, 1, dest->row_width, outfile);
     }
     if (progress != NULL)
       progress->completed_extra_passes++;
diff --git a/wrgif.c b/wrgif.c
index bac672c6..620a3ba9 100644
--- a/wrgif.c
+++ b/wrgif.c
@@ -114,8 +114,8 @@ flush_packet(gif_dest_ptr dinfo)
 {
   if (dinfo->bytesinpkt > 0) {  /* never write zero-length packet */
     dinfo->packetbuf[0] = (char)dinfo->bytesinpkt++;
-    if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt) !=
-        (size_t)dinfo->bytesinpkt)
+    if (fwrite(dinfo->packetbuf, 1, dinfo->bytesinpkt,
+               dinfo->pub.output_file) != (size_t)dinfo->bytesinpkt)
       ERREXIT(dinfo->cinfo, JERR_FILE_WRITE);
     dinfo->bytesinpkt = 0;
   }
diff --git a/wrppm.c b/wrppm.c
index ffa4f89e..57c8aaff 100644
--- a/wrppm.c
+++ b/wrppm.c
@@ -92,7 +92,7 @@ put_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
 {
   ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
 
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -121,7 +121,7 @@ copy_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     PUTPPMSAMPLE(bufferptr, *ptr++);
   }
 #endif
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -149,7 +149,7 @@ put_rgb(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied)
     PUTPPMSAMPLE(bufferptr, ptr[bindex]);
     ptr += ps;
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -175,7 +175,7 @@ put_cmyk(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     PUTPPMSAMPLE(bufferptr, g);
     PUTPPMSAMPLE(bufferptr, b);
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -205,7 +205,7 @@ put_demapped_rgb(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     PUTPPMSAMPLE(bufferptr, color_map1[pixval]);
     PUTPPMSAMPLE(bufferptr, color_map2[pixval]);
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -224,7 +224,7 @@ put_demapped_gray(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
   for (col = cinfo->output_width; col > 0; col--) {
     PUTPPMSAMPLE(bufferptr, color_map[*ptr++]);
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
diff --git a/wrtarga.c b/wrtarga.c
index 57c6a2ff..67ca1f00 100644
--- a/wrtarga.c
+++ b/wrtarga.c
@@ -79,7 +79,7 @@ write_header(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, int num_colors)
     }
   }
 
-  if (JFWRITE(dinfo->output_file, targaheader, 18) != (size_t)18)
+  if (fwrite(targaheader, 1, 18, dinfo->output_file) != (size_t)18)
     ERREXIT(cinfo, JERR_FILE_WRITE);
 }
 
@@ -107,7 +107,7 @@ put_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
     outptr[2] = inptr[0];
     inptr += 3, outptr += 3;
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 METHODDEF(void)
@@ -122,7 +122,7 @@ put_gray_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
   inptr = dest->pub.buffer[0];
   outptr = dest->iobuffer;
   memcpy(outptr, inptr, cinfo->output_width);
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }
 
 
@@ -146,7 +146,7 @@ put_demapped_gray(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
   for (col = cinfo->output_width; col > 0; col--) {
     *outptr++ = color_map0[*inptr++];
   }
-  (void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
+  fwrite(dest->iobuffer, 1, dest->buffer_width, dest->pub.output_file);
 }