diff --git a/services/dataProcessor.ts b/services/dataProcessor.ts
index b275d87..71a047c 100644
--- a/services/dataProcessor.ts
+++ b/services/dataProcessor.ts
@@ -2525,14 +2525,16 @@ export const processBuyBoxExcel = async (fileOrBuffer: File | ArrayBuffer): Prom
 
         console.log('[BuyBox] Available sheets:', workbook.SheetNames.join(', '));
 
-        // Detect country code from sheet name (flexible matching)
+        // Detect country code from sheet name — only BB_* sheets to avoid false positives
         const detectCountry = (name: string): string | null => {
             const n = name.toUpperCase().replace(/[_\- ]/g, '');
-            if (n.includes('FRANCE') || n.includes('FRANC') || n.includes('BBFR') || n === 'FR') return 'FR';
-            if (n.includes('UNITEDKINGDOM') || n.includes('REINOUNIDO') || n.includes('BBUK') || n === 'UK' || n === 'GB') return 'UK';
-            if (n.includes('GERMANY') || n.includes('DEUTSCH') || n.includes('ALEMAN') || n.includes('BBDE') || n === 'DE') return 'DE';
-            if (n.includes('ITALY') || n.includes('ITALIA') || n.includes('BBIT') || n === 'IT') return 'IT';
-            if (n.includes('SPAIN') || n.includes('ESPAÑA') || n.includes('ESPANA') || n.includes('BBES') || n === 'ES') return 'ES';
+            // Require "BB" prefix to avoid matching inventory/other sheets (e.g. INV ITALY)
+            if (!n.startsWith('BB')) return null;
+            if (n.includes('FR') || n.includes('FRANCE')) return 'FR';
+            if (n.includes('UK') || n.includes('GB')) return 'UK';
+            if (n.includes('DE') || n.includes('GERMANY') || n.includes('DEUTSCH')) return 'DE';
+            if (n.includes('IT') || n.includes('ITALY') || n.includes('ITALIA')) return 'IT';
+            if (n.includes('ES') || n.includes('SPAIN') || n.includes('ESPANA')) return 'ES';
             return null;
         };