diff --git a/src/copy.c b/src/copy.c
index cb9018f93..2a4ccc061 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -502,7 +502,7 @@ write_zeros (int fd, off_t n_bytes)
   return true;
 }

-#ifdef SEEK_HOLE
+#if 0
 /* Perform an efficient extent copy, if possible.  This avoids
    the overhead of detecting holes in hole-introducing/preserving
    copy, and thus makes copying sparse files much more efficient.
@@ -1095,7 +1095,7 @@ infer_scantype (int fd, struct stat const *sb,
          && ST_NBLOCKS (*sb) < sb->st_size / ST_NBLOCKSIZE))
     return PLAIN_SCANTYPE;

-#ifdef SEEK_HOLE
+#if 0
   scan_inference->ext_start = lseek (fd, 0, SEEK_DATA);
   if (0 <= scan_inference->ext_start)
     return LSEEK_SCANTYPE;
@@ -1377,7 +1377,7 @@ copy_reg (char const *src_name, char const *dst_name,
       off_t n_read;
       bool wrote_hole_at_eof = false;
       if (! (
-#ifdef SEEK_HOLE
+#if 0
              scantype == LSEEK_SCANTYPE
              ? lseek_copy (source_desc, dest_desc, buf, buf_size, hole_size,
                            scan_inference.ext_start, src_open_sb.st_size,
diff --git a/tests/seek-data-capable b/tests/seek-data-capable
index cc6372214..6e7a9ec1e 100644
--- a/tests/seek-data-capable
+++ b/tests/seek-data-capable
@@ -1,5 +1,7 @@
 import sys, os, errno, platform

+sys.exit(1)
+
 # Pass an _empty_ file
 if len(sys.argv) != 2:
     sys.exit(1)