diff --git a/tests/operations/tests/Hex.mjs b/tests/operations/tests/Hex.mjs
index 3bb89544..6e49f6f8 100644
--- a/tests/operations/tests/Hex.mjs
+++ b/tests/operations/tests/Hex.mjs
@@ -43,6 +43,20 @@ TestRegister.addTests([
             }
         ]
     },
+    {
+        name: "ASCII to Hex with percent deliminator",
+        input: "aberystwyth",
+        expectedOutput: "%61%62%65%72%79%73%74%77%79%74%68",
+        recipeConfig: [
+            {
+                "op": "To Hex",
+                "args": [
+                    "Percent",
+                    0
+                ]
+            }
+        ]
+    },
     {
         name: "ASCII to 0x Hex with comma and line breaks",
         input: "aberystwyth",