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-rw-r--r--unix/tclUnixFCmd.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/unix/tclUnixFCmd.c b/unix/tclUnixFCmd.c
index 3b1b6ca..a1a409e 100644
--- a/unix/tclUnixFCmd.c
+++ b/unix/tclUnixFCmd.c
@@ -564,7 +564,7 @@ TclUnixCopyFile(
#define BINMODE
#endif /* DJGPP */
-#define DEFAULT_COPY_BLOCK_SIZE 4069
+#define DEFAULT_COPY_BLOCK_SIZE 4096
if ((srcFd = TclOSopen(src, O_RDONLY BINMODE, 0)) < 0) { /* INTL: Native */
return TCL_ERROR;