diff --git a/network-poc/native-node/src/inference.rs b/network-poc/native-node/src/inference.rs
index b6bde90..6275141 100644
--- a/network-poc/native-node/src/inference.rs
+++ b/network-poc/native-node/src/inference.rs
@@ -49,7 +49,7 @@ impl LlmEngine {
     }
 
     pub async fn generate(&self, prompt: &str, max_tokens: usize) -> Result<GenerateResult, String> {
-        let system = "You are a coding assistant. Respond with ONLY code. No explanations, no markdown, no comments unless asked.";
+        let system = "You are a coding assistant. Respond with ONLY code. Use proper newlines and indentation. No explanations, no markdown fences, no comments unless asked.";
         let model = self.model.borrow().clone();
 
         let start = Instant::now();
diff --git a/network-poc/static/index.html b/network-poc/static/index.html
index 837a19e..e621fd6 100644
--- a/network-poc/static/index.html
+++ b/network-poc/static/index.html
@@ -2597,6 +2597,10 @@ IMPORTANT: Keep the code SHORT. Max ~60 lines. No comments, no docstrings. Write
                 // Tarkista tyhjät funktiot
                 const emptyFuncs = code.match(/def \w+\([^)]*\):\s*\n\s*(pass|\.\.\.)/g);
                 if (emptyFuncs) staticIssues.push(`${name}: ${emptyFuncs.length} tyhjää funktiota`);
+                // Tarkista one-liner koodi (kaikki yhdellä rivillä)
+                if (lines.length <= 2 && code.length > 200) {
+                    staticIssues.push(`${name}: koodi on yhdellä rivillä (${code.length} merkkiä) — generoi uudelleen`);
+                }
 
                 // Tarkista tiedostojen väliset importit (from db import get_db → onko get_db db.py:ssä?)
                 for (const imp of imports) {