diff --git a/tests/operations/index.mjs b/tests/operations/index.mjs
index 19637e34..bb81d32e 100644
--- a/tests/operations/index.mjs
+++ b/tests/operations/index.mjs
@@ -72,6 +72,7 @@ import "./tests/ExtractAudioMetadata.mjs";
 import "./tests/ExtractEmailAddresses.mjs";
 import "./tests/ExtractHashes.mjs";
 import "./tests/ExtractIPAddresses.mjs";
+import "./tests/Fernet.mjs";
 import "./tests/Float.mjs";
 import "./tests/FileTree.mjs";
 import "./tests/FletcherChecksum.mjs";
diff --git a/tests/operations/tests/Fernet.mjs b/tests/operations/tests/Fernet.mjs
index ee9ba2f1..7a17a675 100644
--- a/tests/operations/tests/Fernet.mjs
+++ b/tests/operations/tests/Fernet.mjs
@@ -5,7 +5,7 @@
  * @copyright Karsten Silkenbäumer 2019
  * @license Apache-2.0
  */
-import TestRegister from "../TestRegister";
+import TestRegister from "../../lib/TestRegister.mjs";
 
 TestRegister.addTests([
     {
@@ -47,7 +47,7 @@ TestRegister.addTests([
     {
         name: "Fernet Encrypt: no input",
         input: "",
-        expectedMatch: /^gAAAAABce-[\w-]+={0,2}$/,
+        expectedMatch: /^gAAA[\w-]+={0,2}$/,
         recipeConfig: [
             {
                 op: "Fernet Encrypt",
@@ -69,12 +69,27 @@ TestRegister.addTests([
     {
         name: "Fernet Encrypt: valid arguments",
         input: "This is a secret message.\n",
-        expectedMatch: /^gAAAAABce-[\w-]+={0,2}$/,
+        expectedMatch: /^gAAA[\w-]+={0,2}$/,
         recipeConfig: [
             {
                 op: "Fernet Encrypt",
                 args: ["MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI="]
             }
         ],
+    },
+    {
+        name: "Fernet Encrypt/Decrypt: round trip",
+        input: "This is a secret message.\n",
+        expectedOutput: "This is a secret message.\n",
+        recipeConfig: [
+            {
+                op: "Fernet Encrypt",
+                args: ["MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI="]
+            },
+            {
+                op: "Fernet Decrypt",
+                args: ["MTIzNDU2Nzg5MDEyMzQ1Njc4OTAxMjM0NTY3ODkwMTI="]
+            },
+        ],
     }
 ]);