diff --git a/tools/installer/list-options.js b/tools/installer/list-options.js
index d79e1cded..d06be8b06 100644
--- a/tools/installer/list-options.js
+++ b/tools/installer/list-options.js
@@ -54,7 +54,7 @@ async function discoverOfficialModuleYamls() {
   };
 
   // Built-ins.
-  for (const code of ['core', 'bmm', 'bmo']) {
+  for (const code of ['core', 'bmm']) {
     const yamlPath = path.join(getModulePath(code), 'module.yaml');
     if (await fs.pathExists(yamlPath)) {
       // Built-ins use their well-known short codes regardless of what the
diff --git a/tools/installer/modules/official-modules.js b/tools/installer/modules/official-modules.js
index 53a70adc5..615daba86 100644
--- a/tools/installer/modules/official-modules.js
+++ b/tools/installer/modules/official-modules.js
@@ -128,15 +128,6 @@ class OfficialModules {
       }
     }
 
-    // Add built-in bmo module (directly under src/orchestrator-skills)
-    const bmoPath = getSourcePath('orchestrator-skills');
-    if (await fs.pathExists(bmoPath)) {
-      const bmoInfo = await this.getModuleInfo(bmoPath, 'bmo', 'src/orchestrator-skills');
-      if (bmoInfo) {
-        modules.push(bmoInfo);
-      }
-    }
-
     return { modules };
   }
 
@@ -234,14 +225,6 @@ class OfficialModules {
       }
     }
 
-    // Check for built-in bmo module (directly under src/orchestrator-skills)
-    if (moduleCode === 'bmo') {
-      const bmoPath = getSourcePath('orchestrator-skills');
-      if (await fs.pathExists(bmoPath)) {
-        return bmoPath;
-      }
-    }
-
     // Check external official modules (pass channelOptions so channel plan applies)
     const externalSource = await this.externalModuleManager.findExternalModuleSource(moduleCode, options);
     if (externalSource) {
diff --git a/tools/installer/project-root.js b/tools/installer/project-root.js
index 373aa1e46..84ecde5b0 100644
--- a/tools/installer/project-root.js
+++ b/tools/installer/project-root.js
@@ -68,9 +68,6 @@ function getModulePath(moduleName, ...segments) {
   if (moduleName === 'bmm') {
     return getSourcePath('bmm-skills', ...segments);
   }
-  if (moduleName === 'bmo') {
-    return getSourcePath('orchestrator-skills', ...segments);
-  }
   return getSourcePath('modules', moduleName, ...segments);
 }