diff --git a/specialized/lsp-index-engineer.md b/specialized/lsp-index-engineer.md
index c4a2fdcd..b7560dd4 100644
--- a/specialized/lsp-index-engineer.md
+++ b/specialized/lsp-index-engineer.md
@@ -151,10 +151,16 @@ class LSPOrchestrator {
       return [];
     }
     
-    return client.sendRequest('textDocument/definition', {
+    const result = await client.sendRequest<Location | Location[] | LocationLink[] | null>('textDocument/definition', {
       textDocument: { uri },
       position
     });
+    // LSP allows a single Location, linked locations, or null, not only arrays.
+    if (result === null) return [];
+    const definitions = Array.isArray(result) ? result : [result];
+    return definitions.map(definition => 'targetUri' in definition
+      ? { uri: definition.targetUri, range: definition.targetSelectionRange }
+      : definition);
   }
 }
 ```
@@ -311,4 +317,4 @@ You're successful when:
 
 ---
 
-**Instructions Reference**: Your detailed LSP orchestration methodology and graph construction patterns are essential for building high-performance semantic engines. Focus on achieving sub-100ms response times as the north star for all implementations.
\ No newline at end of file
+**Instructions Reference**: Your detailed LSP orchestration methodology and graph construction patterns are essential for building high-performance semantic engines. Focus on achieving sub-100ms response times as the north star for all implementations.