diff --git a/src/commands/diff/diff.test.ts b/src/commands/diff/diff.test.ts
index e36c6a0d7..b2343aff2 100644
--- a/src/commands/diff/diff.test.ts
+++ b/src/commands/diff/diff.test.ts
@@ -292,27 +292,6 @@ describe('diff', () => {
         .it('identifies aliased variables specified in config file', (ctx) => {
             expect(ctx.stdout).toMatchSnapshot()
         })
-
-    test.stdout()
-        .command([
-            'diff',
-            '--file',
-            'test-utils/fixtures/diff/auto-alias-transform',
-            '--no-api',
-            '--repo-config-path',
-            './test-utils/fixtures/configs/autoAliasConfig.yml',
-        ])
-        .it(
-            'resolves aliases from generated types file using key transformation',
-            (ctx) => {
-                // Should NOT show "could not be identified" warnings
-                expect(ctx.stdout).not.toContain('could not be identified')
-                // Should identify the variables
-                expect(ctx.stdout).toContain('my-test-variable')
-                expect(ctx.stdout).toContain('enable-feature')
-                expect(ctx.stdout).toContain('removed-variable')
-            },
-        )
     test.stdout()
         .command([
             'diff',
diff --git a/src/commands/diff/index.ts b/src/commands/diff/index.ts
index e29f825b7..e21b5f287 100644
--- a/src/commands/diff/index.ts
+++ b/src/commands/diff/index.ts
@@ -14,7 +14,6 @@ import VarAliasFlag, { getVariableAliases } from '../../flags/var-alias'
 import ShowRegexFlag, { showRegex } from '../../flags/show-regex'
 import { Variable } from '../../api/schemas'
 import { FileFilters } from '../../utils/FileFilters'
-import { keyToConstant } from '../../utils/keyToConstant'
 
 const EMOJI = {
     add: '🟢',
@@ -163,11 +162,7 @@ export default class Diff extends Base {
         Object.values(matchesBySdk).forEach((matches) => {
             matches.forEach((m) => {
                 const match = { ...m }
-                // Try to find alias by direct match first, then by transformed constant name
-                // This handles cases where the generated types file creates constants like MY_VARIABLE
-                // for a variable key like 'my-variable'
-                const aliasedName =
-                    aliasMap[match.name] || aliasMap[keyToConstant(match.name)]
+                const aliasedName = aliasMap[match.name]
                 if (match.isUnknown && aliasedName) {
                     match.alias = match.name
                     match.name = aliasedName
diff --git a/src/commands/generate/types.ts b/src/commands/generate/types.ts
index 84d704303..18ccd80be 100644
--- a/src/commands/generate/types.ts
+++ b/src/commands/generate/types.ts
@@ -4,9 +4,9 @@ import { fetchAllVariables } from '../../api/variables'
 import { Flags } from '@oclif/core'
 import { Feature, Project, Variable, CustomProperty } from '../../api/schemas'
 import { OrganizationMember, fetchOrganizationMembers } from '../../api/members'
+import { upperCase } from 'lodash'
 import { createHash } from 'crypto'
 import path from 'path'
-import { keyToConstant } from '../../utils/keyToConstant'
 import {
     fetchAllCompletedOrArchivedFeatures,
     fetchFeatures,
@@ -353,7 +353,7 @@ export const ${constantName} = '${hashedKey}' as const`
     }
 
     getVariableGeneratedName(variable: Variable) {
-        let constantName = keyToConstant(variable.key)
+        let constantName = upperCase(variable.key).replace(/\s/g, '_')
 
         if (this.methodNames[constantName]?.length) {
             constantName = `${constantName}_${this.methodNames[constantName].length}`
diff --git a/src/utils/keyToConstant.ts b/src/utils/keyToConstant.ts
deleted file mode 100644
index 695b5c027..000000000
--- a/src/utils/keyToConstant.ts
+++ /dev/null
@@ -1,10 +0,0 @@
-import { upperCase } from 'lodash'
-
-/**
- * Converts a variable key to its generated constant name format.
- *
- * Example: 'my-variable' -> 'MY_VARIABLE'
- */
-export function keyToConstant(variableKey: string): string {
-    return upperCase(variableKey).replace(/\s/g, '_')
-}
diff --git a/test-utils/fixtures/configs/autoAliasConfig.yml b/test-utils/fixtures/configs/autoAliasConfig.yml
deleted file mode 100644
index e661ab79d..000000000
--- a/test-utils/fixtures/configs/autoAliasConfig.yml
+++ /dev/null
@@ -1,13 +0,0 @@
-project: "test-project"
-org:
-  id: "org_test"
-  name: "test-org"
-
-typeGenerator:
-  outputPath: "./test-utils/fixtures/configs/mockTypes.ts"
-
-codeInsights:
-  matchPatterns:
-    ts:
-      - ":\\s*([a-z][a-z0-9-]*)"
-
diff --git a/test-utils/fixtures/configs/mockTypes.ts b/test-utils/fixtures/configs/mockTypes.ts
deleted file mode 100644
index fc53f9a7f..000000000
--- a/test-utils/fixtures/configs/mockTypes.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-// Mock generated types file for testing auto-alias resolution
-export const MY_TEST_VARIABLE = 'my-test-variable' as const
-export const ENABLE_FEATURE = 'enable-feature' as const
-export const REMOVED_VARIABLE = 'removed-variable' as const
-
diff --git a/test-utils/fixtures/diff/auto-alias-transform b/test-utils/fixtures/diff/auto-alias-transform
deleted file mode 100644
index fddf67db5..000000000
--- a/test-utils/fixtures/diff/auto-alias-transform
+++ /dev/null
@@ -1,17 +0,0 @@
-diff --git a/test-utils/fixtures/diff/sampleDiff b/test-utils/fixtures/diff/sampleDiff
-new file mode 100644
-index 00000000..e69de29b
-diff --git a/test-utils/fixtures/diff/sampleDiff.ts b/test-utils/fixtures/diff/sampleDiff.ts
-new file mode 100644
-index 00000000..ed8ee4ab
---- /dev/null
-+++ b/test-utils/fixtures/diff/sampleDiff.ts
-@@ -1,1 +1,21 @@
-+const config = {
-+  feature: my-test-variable,
-+  beta: enable-feature
-+}
--const old = {
--  feature: removed-variable
--}
-