diff --git a/frontend/app/exchange/page.tsx b/frontend/app/exchange/page.tsx
index 31d112c..b668c96 100644
--- a/frontend/app/exchange/page.tsx
+++ b/frontend/app/exchange/page.tsx
@@ -268,7 +268,16 @@ export default function ExchangePage() {
       // Redirect to trades page after successful booking
       router.push("/trades");
     } catch (err) {
-      const errorMessage = err instanceof Error ? err.message : "Failed to book trade";
+      let errorMessage = "Failed to book trade";
+      if (err instanceof Error) {
+        // Check if it's an ApiError with detail in data
+        if ("data" in err && err.data && typeof err.data === "object") {
+          const data = err.data as { detail?: string };
+          errorMessage = data.detail || err.message;
+        } else {
+          errorMessage = err.message;
+        }
+      }
       setError(errorMessage);
 
       // Check if it's a "same day" error and extract trade ID