1 files changed, 3 insertions, 1 deletions

diff --git a/coreutils/cksum.c b/coreutils/cksum.c
index ac0b0c319..8a8a39f68 100644
--- a/coreutils/cksum.c
+++ b/coreutils/cksum.c
@@ -13,6 +13,7 @@
 //usage:       "Calculate the CRC32 checksums of FILES"
 
 #include "libbb.h"
+#include "common_bufsiz.h"
 
 /* This is a NOEXEC applet. Be very careful! */
 
@@ -32,6 +33,7 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
         argv++;
 #endif
 
+        setup_common_bufsiz();
         do {
                 int fd = open_or_warn_stdin(*argv ? *argv : bb_msg_standard_input);
 
@@ -43,7 +45,7 @@ int cksum_main(int argc UNUSED_PARAM, char **argv)
                 length = 0;
 
 #define read_buf bb_common_bufsiz1
-                while ((bytes_read = safe_read(fd, read_buf, sizeof(read_buf))) > 0) {
+                while ((bytes_read = safe_read(fd, read_buf, COMMON_BUFSIZE)) > 0) {
                         length += bytes_read;
                         crc = crc32_block_endian1(crc, read_buf, bytes_read, crc32_table);
                 }