diff --git a/pitch-deck/components/ui/ChatInterface.tsx b/pitch-deck/components/ui/ChatInterface.tsx
index fe29cd8..93a4eb9 100644
--- a/pitch-deck/components/ui/ChatInterface.tsx
+++ b/pitch-deck/components/ui/ChatInterface.tsx
@@ -48,16 +48,16 @@ export default function ChatInterface({ lang }: ChatInterfaceProps) {
       const reader = res.body!.getReader()
       const decoder = new TextDecoder()
       let content = ''
+      let firstChunk = true
 
       while (true) {
         const { done, value } = await reader.read()
         if (done) break
 
-        const chunk = decoder.decode(value, { stream: true })
-        content += chunk
+        content += decoder.decode(value, { stream: true })
 
-        if (isWaiting || content.length === chunk.length) {
-          // First chunk arrived — replace waiting indicator with real content
+        if (firstChunk) {
+          firstChunk = false
           setIsWaiting(false)
           setMessages(prev => [...prev, { role: 'assistant', content }])
         } else {