diff --git a/internal/configfile/config_file.go b/internal/configfile/config_file.go
index 3fd16c7..753dd72 100644
--- a/internal/configfile/config_file.go
+++ b/internal/configfile/config_file.go
@@ -169,7 +169,7 @@ func LoadConfFile(filename string, password []byte) ([]byte, *ConfFile, error) {
 
 `+"\033[0m")
 
-		return nil, nil, fmt.Errorf("Deprecated filesystem")
+		return nil, nil, exitcodes.NewErr("Deprecated filesystem", exitcodes.DeprecatedFS)
 	}
 	if len(password) == 0 {
 		// We have validated the config file, but without a password we cannot
diff --git a/internal/exitcodes/exitcodes.go b/internal/exitcodes/exitcodes.go
index 36f2aae..fc65166 100644
--- a/internal/exitcodes/exitcodes.go
+++ b/internal/exitcodes/exitcodes.go
@@ -63,6 +63,8 @@ const (
 	Profiler = 25
 	// FsckErrors - the filesystem check found errors
 	FsckErrors = 26
+	// DeprecatedFS - this filesystem is deprecated
+	DeprecatedFS = 27
 )
 
 // Err wraps an error with an associated numeric exit code
diff --git a/tests/fsck/fsck_test.go b/tests/fsck/fsck_test.go
index b5bbf84..77f94c3 100644
--- a/tests/fsck/fsck_test.go
+++ b/tests/fsck/fsck_test.go
@@ -1,7 +1,9 @@
 package fsck
 
 import (
+	"os"
 	"os/exec"
+	"strings"
 	"testing"
 
 	"github.com/rfjakob/gocryptfs/internal/exitcodes"
@@ -18,3 +20,41 @@ func TestBrokenFsV14(t *testing.T) {
 		t.Errorf("wrong exit code, have=%d want=%d", code, exitcodes.FsckErrors)
 	}
 }
+
+func TestExampleFses(t *testing.T) {
+	dirfd, err := os.Open("../example_filesystems")
+	if err != nil {
+		t.Fatal(err)
+	}
+	var fsNames []string
+	entries, err := dirfd.Readdir(0)
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, e := range entries {
+		if !e.IsDir() {
+			continue
+		}
+		if strings.Contains(e.Name(), "reverse") {
+			continue
+		}
+		if e.Name() == "content" {
+			continue
+		}
+		fsNames = append(fsNames, e.Name())
+	}
+	for _, n := range fsNames {
+		path := "../example_filesystems/" + n
+		cmd := exec.Command(test_helpers.GocryptfsBinary, "-fsck", "-extpass", "echo test", path)
+		outBin, err := cmd.CombinedOutput()
+		out := string(outBin)
+		code := test_helpers.ExtractCmdExitCode(err)
+		if code == exitcodes.DeprecatedFS {
+			continue
+		}
+		if code != 0 {
+			t.Log(out)
+			t.Errorf("fsck returned code %d but fs should be clean", code)
+		}
+	}
+}