diff --git a/fish/test-copy.sh b/fish/test-copy.sh
index 6467a52ae..ca4885bfa 100755
--- a/fish/test-copy.sh
+++ b/fish/test-copy.sh
@@ -23,7 +23,7 @@
 
 test -d /dev/fd || {
     echo "$0: Skipping this test because /dev/fd is missing."
-    exit 0
+    exit 77
 }
 
 set -e
diff --git a/fish/test-edit.sh b/fish/test-edit.sh
index a077ada67..b9acf457c 100755
--- a/fish/test-edit.sh
+++ b/fish/test-edit.sh
@@ -23,7 +23,7 @@
 
 test -d /dev/fd || {
     echo "$0: Skipping this test because /dev/fd is missing."
-    exit 0
+    exit 77
 }
 
 set -e
diff --git a/fish/test-mount-local.sh b/fish/test-mount-local.sh
index c1b3f5501..ad62a925a 100755
--- a/fish/test-mount-local.sh
+++ b/fish/test-mount-local.sh
@@ -20,7 +20,7 @@
 
 if [ -n "$SKIP_TEST_MOUNT_LOCAL_SH" ]; then
     echo "$0: skipping test because SKIP_TEST_MOUNT_LOCAL_SH is set."
-    exit 0
+    exit 77
 fi
 
 # Skip if no FUSE.
@@ -28,7 +28,7 @@ fi
 test -w /dev/fuse || {
     echo "$0: Skipping this test"
     echo "  because /dev/fuse is missing or not writable by the current user."
-    exit 0
+    exit 77
 }
 
 set -e
diff --git a/fuse/test-fuse-umount-race.sh b/fuse/test-fuse-umount-race.sh
index f6f65d6aa..6e1bfa812 100755
--- a/fuse/test-fuse-umount-race.sh
+++ b/fuse/test-fuse-umount-race.sh
@@ -25,12 +25,12 @@ set -e
 
 if [ -n "$SKIP_TEST_FUSE_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 if [ ! -w /dev/fuse ]; then
     echo "SKIPPING guestmount test, because there is no /dev/fuse."
-    exit 0
+    exit 77
 fi
 
 if [ -z "$top_builddir" ]; then
diff --git a/fuse/test-fuse.sh b/fuse/test-fuse.sh
index 8dc658bbe..fccb556c7 100755
--- a/fuse/test-fuse.sh
+++ b/fuse/test-fuse.sh
@@ -22,17 +22,17 @@ set -e
 
 if [ -n "$SKIP_TEST_FUSE_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 if [ ! -w /dev/fuse ]; then
     echo "SKIPPING guestmount test, because there is no /dev/fuse."
-    exit 0
+    exit 77
 fi
 
 if ! setfacl --help >/dev/null 2>&1; then
     echo "SKIPPING guestmount test, because setfacl is not installed."
-    exit 0
+    exit 77
 fi
 
 if [ -z "$top_builddir" ]; then
diff --git a/gobject/run-live-tests b/gobject/run-live-tests
index 11e8f7b07..e2deeb118 100755
--- a/gobject/run-live-tests
+++ b/gobject/run-live-tests
@@ -20,7 +20,7 @@ set -e
 
 if [ -z "$GJS" ]; then
   echo "GObject bind tests skipped: gjs is missing"
-  exit 0
+  exit 77
 fi
 
 ../run $GJS $srcdir/tests-misc.js 2>/dev/null
diff --git a/gobject/run-tests b/gobject/run-tests
index 55c489cfe..a4a769074 100755
--- a/gobject/run-tests
+++ b/gobject/run-tests
@@ -20,7 +20,7 @@ set -e
 
 if [ -z "$GJS" ]; then
   echo "GObject bind tests skipped: gjs is missing"
-  exit 0
+  exit 77
 fi
 
 ../run $GJS $srcdir/bindtests.js > bindtests.tmp
diff --git a/ocaml/t/guestfs_500_mount_local.ml b/ocaml/t/guestfs_500_mount_local.ml
index 570cefdb9..7573cd1dc 100644
--- a/ocaml/t/guestfs_500_mount_local.ml
+++ b/ocaml/t/guestfs_500_mount_local.ml
@@ -39,7 +39,7 @@ let rec main () =
     if value <> "" then (
       printf "%s: test skipped because %s is set.\n"
         Sys.executable_name name;
-      exit 0
+      exit 77
     )
   in
 
diff --git a/sysprep/test-virt-sysprep-script.sh b/sysprep/test-virt-sysprep-script.sh
index 09c42aff2..98ecb9669 100755
--- a/sysprep/test-virt-sysprep-script.sh
+++ b/sysprep/test-virt-sysprep-script.sh
@@ -22,12 +22,12 @@ set -e
 
 if [ -n "$SKIP_TEST_VIRT_SYSPREP_SCRIPT_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 if [ ! -w /dev/fuse ]; then
     echo "$0: SKIPPING test, because there is no /dev/fuse."
-    exit 0
+    exit 77
 fi
 
 # Check that multiple scripts can run.
diff --git a/tests/btrfs/test-btrfs-devices.sh b/tests/btrfs/test-btrfs-devices.sh
index fb6beeba6..c950c6b8c 100755
--- a/tests/btrfs/test-btrfs-devices.sh
+++ b/tests/btrfs/test-btrfs-devices.sh
@@ -27,7 +27,7 @@ set -e
 # XXX Not a very good test.
 if ! btrfs --help >/dev/null 2>&1; then
     echo "$0: test skipped because no 'btrfs' utility"
-    exit 0
+    exit 77
 fi
 
 rm -f test[1234].img
diff --git a/tests/btrfs/test-btrfs-subvolume-default.pl b/tests/btrfs/test-btrfs-subvolume-default.pl
index 2c09ce2da..ae82aa1c8 100755
--- a/tests/btrfs/test-btrfs-subvolume-default.pl
+++ b/tests/btrfs/test-btrfs-subvolume-default.pl
@@ -39,7 +39,7 @@ $g->launch ();
 # If btrfs is not available, bail.
 unless (feature_available ($g, "btrfs")) {
     warn "$0: skipping test because btrfs is not available\n";
-    exit 0;
+    exit 77;
 }
 
 $g->part_disk ("/dev/sda", "mbr");
diff --git a/tests/extra/test-upstream-qemu.sh b/tests/extra/test-upstream-qemu.sh
index eb226805f..d8f16f4b6 100755
--- a/tests/extra/test-upstream-qemu.sh
+++ b/tests/extra/test-upstream-qemu.sh
@@ -20,13 +20,13 @@ set -e
 
 if [ ! -d "$QEMUDIR" ]; then
     echo "$0: \$QEMUDIR not a directory, tests against upstream qemu skipped"
-    exit 0
+    exit 77
 fi
 
 QEMU="$QEMUDIR/x86_64-softmmu/qemu-system-x86_64"
 if ! "$QEMU" --help >/dev/null 2>&1; then
     echo "$0: $QEMU not executable, tests against upstream qemu skipped"
-    exit 0
+    exit 77
 fi
 
 "$QEMU" --version
diff --git a/tests/luks/test-luks-list.sh b/tests/luks/test-luks-list.sh
index 80ff6e7af..f5984dac8 100755
--- a/tests/luks/test-luks-list.sh
+++ b/tests/luks/test-luks-list.sh
@@ -22,7 +22,7 @@ set -e
 
 [ -n "$SKIP_TEST_LUKS_SH" ] && {
     echo "test-luks-list.sh skipped (environment variable set)"
-    exit 0
+    exit 77
 }
 
 rm -f test1.img test.output
diff --git a/tests/luks/test-luks.sh b/tests/luks/test-luks.sh
index a9edca0ce..eee7295dc 100755
--- a/tests/luks/test-luks.sh
+++ b/tests/luks/test-luks.sh
@@ -22,7 +22,7 @@ set -e
 
 [ -n "$SKIP_TEST_LUKS_SH" ] && {
     echo "test-luks.sh skipped (environment variable set)"
-    exit 0
+    exit 77
 }
 
 rm -f test1.img
diff --git a/tests/md/test-inspect-fstab-md.sh b/tests/md/test-inspect-fstab-md.sh
index a64cbe090..bd29c310e 100755
--- a/tests/md/test-inspect-fstab-md.sh
+++ b/tests/md/test-inspect-fstab-md.sh
@@ -23,7 +23,7 @@ export LANG=C
 
 if [ -n "$SKIP_TEST_INSPECT_FSTAB_MD_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 # The first test requires a new Augeas lens for parsing mdadm.conf.
@@ -32,7 +32,7 @@ fi
 f=$(grep mdadm_conf.aug ../../appliance/supermin.d/hostfiles | head -1)
 if [ -z "$f" -o ! -f "$f" ]; then
     echo "$0: test skipped because Augeas mdadm.conf lens is not available."
-    exit 0
+    exit 77
 fi
 
 guestfish=../../fish/guestfish
diff --git a/tests/md/test-list-filesystems.sh b/tests/md/test-list-filesystems.sh
index f52afb009..642e0339f 100755
--- a/tests/md/test-list-filesystems.sh
+++ b/tests/md/test-list-filesystems.sh
@@ -22,7 +22,7 @@ set -e
 
 if [ -n "$SKIP_TEST_LIST_FILESYSTEMS_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 rm -f test.output
diff --git a/tests/md/test-mdadm.sh b/tests/md/test-mdadm.sh
index 91fcca3d8..c72cd503f 100755
--- a/tests/md/test-mdadm.sh
+++ b/tests/md/test-mdadm.sh
@@ -22,7 +22,7 @@ set -e
 
 if [ -n "$SKIP_TEST_MDADM_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 rm -f md-test1.img md-test2.img md-test3.img md-test4.img
diff --git a/tests/ntfsclone/test-ntfsclone.sh b/tests/ntfsclone/test-ntfsclone.sh
index 999cbfbfb..efed7d879 100755
--- a/tests/ntfsclone/test-ntfsclone.sh
+++ b/tests/ntfsclone/test-ntfsclone.sh
@@ -22,7 +22,7 @@ set -e
 
 if [ -n "$SKIP_TEST_NTFSCLONE_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 rm -f test1.img backup1 backup2
@@ -32,7 +32,7 @@ guestfish=../../fish/guestfish
 # Skip if ntfs-3g is not supported by the appliance.
 if ! $guestfish add /dev/null : run : available "ntfs3g"; then
     echo "$0: skipped because ntfs-3g is not supported by the appliance"
-    exit 0
+    exit 77
 fi
 
 # Export the filesystems to the backup file.
diff --git a/tests/protocol/test-launch-race.pl b/tests/protocol/test-launch-race.pl
index 5a660ceeb..c2f529671 100755
--- a/tests/protocol/test-launch-race.pl
+++ b/tests/protocol/test-launch-race.pl
@@ -26,7 +26,7 @@ use POSIX;
 use Sys::Guestfs;
 
 # Allow this test to be skipped.
-exit 0 if $ENV{SKIP_TEST_LAUNCH_RACE_PL};
+exit 77 if $ENV{SKIP_TEST_LAUNCH_RACE_PL};
 
 # Use a temporary TMPDIR to ensure it's clean
 my $tmpdir = tempdir (CLEANUP => 1);
diff --git a/tests/regressions/rhbz690819.sh b/tests/regressions/rhbz690819.sh
index e3f9bb89c..4e79f4be7 100755
--- a/tests/regressions/rhbz690819.sh
+++ b/tests/regressions/rhbz690819.sh
@@ -29,7 +29,7 @@
 # the mkfs fails.  It's not clear how to solve this cleanly. XXX
 [ -n "$SKIP_TEST_RHBZ690819_SH" ] && {
     echo "$0 skipped (environment variable set)"
-    exit 0
+    exit 77
 }
 
 set -e
@@ -37,7 +37,7 @@ export LANG=C
 
 if [ -n "$SKIP_TEST_RHBZ690819_SH" ]; then
     echo "$0: test skipped because environment variable is set."
-    exit 0
+    exit 77
 fi
 
 rm -f test.img