diff --git a/src/core/lib/Enigma.mjs b/src/core/lib/Enigma.mjs
index 1ed0ea2b..39193f69 100644
--- a/src/core/lib/Enigma.mjs
+++ b/src/core/lib/Enigma.mjs
@@ -25,7 +25,6 @@ export const ROTORS = [
 ];
 
 export const ROTORS_FOURTH = [
-    {name: "None", value: ""},
     {name: "Beta", value: "LEYJVCNIXWPBQMDRTAKZGFUHOS"},
     {name: "Gamma", value: "FSOKANUERHMBTIYCWLQPZXVGJD"},
 ];
diff --git a/src/core/operations/Bombe.mjs b/src/core/operations/Bombe.mjs
index ea3210fa..5e128498 100644
--- a/src/core/operations/Bombe.mjs
+++ b/src/core/operations/Bombe.mjs
@@ -44,7 +44,7 @@ class Bombe extends Operation {
                 ]
             },
             {
-                name: "Left-most rotor",
+                name: "Left-most (4th) rotor",
                 type: "editableOption",
                 value: ROTORS_FOURTH,
                 defaultIndex: 0
diff --git a/src/core/operations/Enigma.mjs b/src/core/operations/Enigma.mjs
index ace50604..77333b18 100644
--- a/src/core/operations/Enigma.mjs
+++ b/src/core/operations/Enigma.mjs
@@ -42,7 +42,7 @@ class Enigma extends Operation {
                 ]
             },
             {
-                name: "Left-most rotor",
+                name: "Left-most (4th) rotor",
                 type: "editableOption",
                 value: ROTORS_FOURTH,
                 defaultIndex: 0