diff --git a/src/lint/lintFile.spec.ts b/src/lint/lintFile.spec.ts
index 5b9cc39..aa4e3ce 100644
--- a/src/lint/lintFile.spec.ts
+++ b/src/lint/lintFile.spec.ts
@@ -46,7 +46,7 @@ const expectedDiagnostics = [
     severity: Severity.Error
   },
   {
-    message: 'Line contains tab indentation',
+    message: 'Line contains a tab character (09x)',
     lineNumber: 7,
     startColumnNumber: 1,
     endColumnNumber: 2,
diff --git a/src/lint/lintFolder.spec.ts b/src/lint/lintFolder.spec.ts
index 3c28bde..e5b584c 100644
--- a/src/lint/lintFolder.spec.ts
+++ b/src/lint/lintFolder.spec.ts
@@ -53,7 +53,7 @@ const expectedDiagnostics = [
     severity: Severity.Error
   },
   {
-    message: 'Line contains tab indentation',
+    message: 'Line contains a tab character (09x)',
     lineNumber: 7,
     startColumnNumber: 1,
     endColumnNumber: 2,
diff --git a/src/lint/lintProject.spec.ts b/src/lint/lintProject.spec.ts
index a8b79b3..259acea 100644
--- a/src/lint/lintProject.spec.ts
+++ b/src/lint/lintProject.spec.ts
@@ -51,7 +51,7 @@ const expectedDiagnostics = [
     severity: Severity.Error
   },
   {
-    message: 'Line contains tab indentation',
+    message: 'Line contains a tab character (09x)',
     lineNumber: 7,
     startColumnNumber: 1,
     endColumnNumber: 2,
diff --git a/src/rules/line/noTabs.spec.ts b/src/rules/line/noTabs.spec.ts
index 8ffdb62..1d00199 100644
--- a/src/rules/line/noTabs.spec.ts
+++ b/src/rules/line/noTabs.spec.ts
@@ -11,7 +11,7 @@ describe('noTabs', () => {
     const line = "\t%put 'hello';"
     expect(noTabs.test(line, 1)).toEqual([
       {
-        message: 'Line contains tab indentation',
+        message: 'Line contains a tab character (09x)',
         lineNumber: 1,
         startColumnNumber: 1,
         endColumnNumber: 2,
diff --git a/src/rules/line/noTabs.ts b/src/rules/line/noTabs.ts
index 3f69b6f..3217957 100644
--- a/src/rules/line/noTabs.ts
+++ b/src/rules/line/noTabs.ts
@@ -7,7 +7,7 @@ import { getIndicesOf } from '../../utils'
 const name = 'noTabs'
 const alias = 'noTabIndentation'
 const description = 'Disallow indenting with tabs.'
-const message = 'Line contains tab indentation'
+const message = 'Line contains a tab character (09x)'
 
 const test = (value: string, lineNumber: number, config?: LintConfig) => {
   const severity =