diff --git a/lib/rules/no-octal.js b/lib/rules/no-octal.js
index 44df45fdacd..9d05455cdac 100644
--- a/lib/rules/no-octal.js
+++ b/lib/rules/no-octal.js
@@ -23,7 +23,7 @@ module.exports = {
         schema: [],
 
         messages: {
-            noOcatal: "Octal literals should not be used."
+            noOctal: "Octal literals should not be used."
         }
     },
 
@@ -35,7 +35,7 @@ module.exports = {
                 if (typeof node.value === "number" && /^0[0-9]/u.test(node.raw)) {
                     context.report({
                         node,
-                        messageId: "noOcatal"
+                        messageId: "noOctal"
                     });
                 }
             }
diff --git a/tests/lib/rules/no-octal.js b/tests/lib/rules/no-octal.js
index dd2839e728c..a48bf5a1031 100644
--- a/tests/lib/rules/no-octal.js
+++ b/tests/lib/rules/no-octal.js
@@ -31,77 +31,77 @@ ruleTester.run("no-octal", rule, {
         {
             code: "var a = 01234;",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "a = 1 + 01234;",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "00",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "08",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "09.1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "09e1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "09.1e1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "018",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "019.1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "019e1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         },
         {
             code: "019.1e1",
             errors: [{
-                messageId: "noOcatal",
+                messageId: "noOctal",
                 type: "Literal"
             }]
         }