diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index b21feae3230..490eda88c33 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -56,6 +56,7 @@ jobs:
             --exclude=src/main/daemon/node-pty-fd-leak.test.ts \
             --exclude=src/main/providers/local-pty-shell-ready-zsh-launch-environment.test.ts \
             --exclude=src/main/providers/__tests__/shell-ready-framework-example.test.ts \
+            --exclude=src/main/pty/omp-shell-wrapper-alias-safety.test.ts \
             --exclude=src/main/pty/omp-shell-wrapper.node-pty.test.ts \
             --exclude=src/main/shell-startup-feature-channel.test.ts \
             --exclude=src/main/terminal-history-fish-session.node-pty.test.ts \
diff --git a/config/scripts/pr-workflow-parallelism.test.mjs b/config/scripts/pr-workflow-parallelism.test.mjs
index ed4e1b1f1c8..d18837a1573 100644
--- a/config/scripts/pr-workflow-parallelism.test.mjs
+++ b/config/scripts/pr-workflow-parallelism.test.mjs
@@ -15,6 +15,7 @@ const shellContractFiles = [
   'src/main/daemon/shell-ready.test.ts',
   'src/main/providers/local-pty-shell-ready-zsh-launch-environment.test.ts',
   'src/main/providers/__tests__/shell-ready-framework-example.test.ts',
+  'src/main/pty/omp-shell-wrapper-alias-safety.test.ts',
   'src/main/pty/omp-shell-wrapper.node-pty.test.ts',
   'src/main/shell-startup-feature-channel.test.ts',
   'src/main/zsh-scoped-histfile.live-shell.test.ts',
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/daemon-bash-rcfile.txt b/src/main/__fixtures__/shell-wrapper-snapshots/daemon-bash-rcfile.txt
index b79ed543494..536831230b4 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/daemon-bash-rcfile.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/daemon-bash-rcfile.txt
@@ -39,8 +39,8 @@ __orca_restore_agent_teams_path
 # their normal argv shape.
 __orca_omp_should_skip_extension() {
   case "${1:-}" in
-    help|--help|-h|--version|-v) return 0 ;;
-    __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+    'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+    '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
   esac
   return 1
 }
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/daemon-zsh-zshenv.txt b/src/main/__fixtures__/shell-wrapper-snapshots/daemon-zsh-zshenv.txt
index 3d3403ad099..f86bd569381 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/daemon-zsh-zshenv.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/daemon-zsh-zshenv.txt
@@ -77,8 +77,8 @@ __orca_deferred_init() {
     # their normal argv shape.
     __orca_omp_should_skip_extension() {
       case "${1:-}" in
-        help|--help|-h|--version|-v) return 0 ;;
-        __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+        'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+        '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
       esac
       return 1
     }
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/local-bash-rcfile.txt b/src/main/__fixtures__/shell-wrapper-snapshots/local-bash-rcfile.txt
index dc14486cdb7..a11d3e6183e 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/local-bash-rcfile.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/local-bash-rcfile.txt
@@ -42,8 +42,8 @@ __orca_restore_agent_teams_path
 # their normal argv shape.
 __orca_omp_should_skip_extension() {
   case "${1:-}" in
-    help|--help|-h|--version|-v) return 0 ;;
-    __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+    'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+    '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
   esac
   return 1
 }
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/local-zsh-zshenv.txt b/src/main/__fixtures__/shell-wrapper-snapshots/local-zsh-zshenv.txt
index 10e9e144fc0..35a262b5e02 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/local-zsh-zshenv.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/local-zsh-zshenv.txt
@@ -77,8 +77,8 @@ __orca_deferred_init() {
     # their normal argv shape.
     __orca_omp_should_skip_extension() {
       case "${1:-}" in
-        help|--help|-h|--version|-v) return 0 ;;
-        __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+        'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+        '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
       esac
       return 1
     }
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/relay-bash-rcfile.txt b/src/main/__fixtures__/shell-wrapper-snapshots/relay-bash-rcfile.txt
index de9c8f95248..61bdd01dd50 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/relay-bash-rcfile.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/relay-bash-rcfile.txt
@@ -31,8 +31,8 @@ fi
 # their normal argv shape.
 __orca_omp_should_skip_extension() {
   case "${1:-}" in
-    help|--help|-h|--version|-v) return 0 ;;
-    __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+    'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+    '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
   esac
   return 1
 }
diff --git a/src/main/__fixtures__/shell-wrapper-snapshots/relay-zsh-zshenv.txt b/src/main/__fixtures__/shell-wrapper-snapshots/relay-zsh-zshenv.txt
index 394bc4a6d10..ff90115d30d 100644
--- a/src/main/__fixtures__/shell-wrapper-snapshots/relay-zsh-zshenv.txt
+++ b/src/main/__fixtures__/shell-wrapper-snapshots/relay-zsh-zshenv.txt
@@ -51,8 +51,8 @@ __orca_deferred_init() {
     # their normal argv shape.
     __orca_omp_should_skip_extension() {
       case "${1:-}" in
-        help|--help|-h|--version|-v) return 0 ;;
-        __complete|acp|agents|auth-broker|auth-gateway|bench|commit|completions|config|dry-balance|gallery|grep|grievances|install|join|models|plugin|read|say|search|setup|shell|ssh|stats|tiny-models|token|ttsr|update|usage|worktree|q|wt) return 0 ;;
+        'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
+        '__complete'|'acp'|'agents'|'auth-broker'|'auth-gateway'|'bench'|'commit'|'completions'|'config'|'dry-balance'|'gallery'|'grep'|'grievances'|'install'|'join'|'models'|'plugin'|'read'|'say'|'search'|'setup'|'shell'|'ssh'|'stats'|'tiny-models'|'token'|'ttsr'|'update'|'usage'|'worktree'|'q'|'wt') return 0 ;;
       esac
       return 1
     }
diff --git a/src/main/pty/omp-shell-wrapper-alias-safety.test.ts b/src/main/pty/omp-shell-wrapper-alias-safety.test.ts
index 3863b3aacaf..d1d0e0aad83 100644
--- a/src/main/pty/omp-shell-wrapper-alias-safety.test.ts
+++ b/src/main/pty/omp-shell-wrapper-alias-safety.test.ts
@@ -68,3 +68,28 @@ describe.skipIf(process.platform === 'win32')('omp wrapper under a user alias na
     expectAliasedOmpNameSurvives('/bin/zsh', 'setopt aliases')
   })
 })
+
+describe.skipIf(process.platform === 'win32' || !zshAvailable)('OMP wrapper global aliases', () => {
+  it.each(['--help', '-v', 'models'])('parses with hostile global alias %s', (token) => {
+    const root = mkdtempSync(join(tmpdir(), 'orca-omp-global-alias-'))
+    roots.push(root)
+    const startup = join(root, 'startup.zsh')
+    writeFileSync(
+      startup,
+      [
+        `alias -g -- ${token}='${token} 2>&1 | cat'`,
+        getPosixOmpShellWrapper(),
+        `if ! __orca_omp_should_skip_extension '${token}'; then exit 1; fi`,
+        'printf "parsed\\n"',
+        `alias -g -- '${token}'`
+      ].join('\n')
+    )
+    const result = spawnSync('/bin/zsh', ['-f', startup], {
+      encoding: 'utf8',
+      env: { ...process.env, HOME: root, ZDOTDIR: root }
+    })
+    expect(result.status, result.stderr).toBe(0)
+    expect(result.stdout).toContain('parsed')
+    expect(result.stdout).toContain('2>&1 | cat')
+  })
+})
diff --git a/src/main/pty/omp-shell-wrapper.ts b/src/main/pty/omp-shell-wrapper.ts
index f5bc25421bb..de1d9bed2af 100644
--- a/src/main/pty/omp-shell-wrapper.ts
+++ b/src/main/pty/omp-shell-wrapper.ts
@@ -40,13 +40,13 @@ const OMP_SUBCOMMANDS = [
 ] as const
 
 export function getPosixOmpShellWrapper(): string {
-  const subcommands = OMP_SUBCOMMANDS.join('|')
+  const subcommands = OMP_SUBCOMMANDS.map((value) => `'${value}'`).join('|')
   return `# Why: OMP does not auto-load Orca's managed status extension; wrap only
 # interactive launch invocations so subcommands such as \`omp config\` keep
 # their normal argv shape.
 __orca_omp_should_skip_extension() {
   case "\${1:-}" in
-    help|--help|-h|--version|-v) return 0 ;;
+    'help'|'--help'|'-h'|'--version'|'-v') return 0 ;;
     ${subcommands}) return 0 ;;
   esac
   return 1