diff --git a/src/components/HistoryView.tsx b/src/components/HistoryView.tsx
index 280877a..f9b69ac 100644
--- a/src/components/HistoryView.tsx
+++ b/src/components/HistoryView.tsx
@@ -8,7 +8,7 @@ import { cn } from '../lib/utils';
 interface HistoryViewProps {
   headers: string[];
   data: ExcelRow[];
-  onRevert: (articleNo: string, oldData: ExcelRow, historyId?: number) => void;
+  onRevert: (articleNo: string, oldData: ExcelRow, historyId?: string) => void;
   onEdit?: (rowIndex: number) => void;
 }
 
@@ -21,22 +21,18 @@ export function HistoryView({ headers, data, onRevert, onEdit }: HistoryViewProp
   const [isFullscreen, setIsFullscreen] = useState(false);
 
   useEffect(() => {
-    console.log('[HistoryView] Mounting, data length:', data.length);
     loadHistory();
   }, []);
 
   useEffect(() => {
-    console.log('[HistoryView] data changed, length:', data.length);
     if (data.length > 0) {
       loadHistory();
     }
   }, [data]);
 
   const loadHistory = async () => {
-    console.log('[HistoryView] loadHistory called');
     setLoading(true);
     const historyData = await getHistory();
-    console.log('[HistoryView] getHistory returned:', historyData.length, 'entries', historyData[0]?.id === -1 || historyData[0]?.id === -2 ? '(ERROR)' : '');
     setHistory(historyData);
     setLoading(false);
   };
diff --git a/src/lib/supabase.ts b/src/lib/supabase.ts
index 2d39840..87716b9 100644
--- a/src/lib/supabase.ts
+++ b/src/lib/supabase.ts
@@ -108,7 +108,7 @@ export async function saveRowToSupabase(articleNo: string, rowData: ExcelRow): P
 }
 
 export interface HistoryEntry {
-  id?: number;
+  id?: string;
   product_id: string;
   article_name: string;
   old_data: ExcelRow;
@@ -161,18 +161,16 @@ export async function saveHistoryEntry(
 
 export async function getHistory(): Promise<HistoryEntry[]> {
   try {
-    const url = `${SUPABASE_URL}/rest/v1/products_history?select=*&order=changed_at.desc&limit=500`;
-    console.log('[getHistory] Fetching from:', url);
-    console.log('[getHistory] Session:', !!getStoredSession(), 'ANON_KEY available:', !!SUPABASE_ANON_KEY);
-    const response = await safeFetch(url, { cache: 'no-store' });
-    console.log('[getHistory] Response status:', response.status);
-    console.log('[getHistory] Response ok:', response.ok);
+    const response = await safeFetch(
+      `${SUPABASE_URL}/rest/v1/products_history?select=*&order=changed_at.desc&limit=500`,
+      { cache: 'no-store' }
+    );
 
     if (!response.ok) {
       const errText = await response.text();
-      console.error('[getHistory] Error response:', errText);
+      console.error('[getHistory] Error:', response.status, errText.substring(0, 200));
       return [{
-        id: -1,
+        id: 'ERROR',
         product_id: 'ERROR',
         article_name: `Failed: ${response.status} ${errText.substring(0, 200)}`,
         old_data: [],
@@ -181,13 +179,11 @@ export async function getHistory(): Promise<HistoryEntry[]> {
         changed_by: 'system'
       }];
     }
-    const data = await response.json();
-    console.log('[getHistory] Received entries:', Array.isArray(data) ? data.length : data);
-    return data;
+    return await response.json();
   } catch (error: any) {
     console.error('[getHistory] Exception:', error.message);
     return [{
-      id: -2,
+      id: 'EXCEPTION',
       product_id: 'EXCEPTION',
       article_name: `Message: ${error.message}`,
       old_data: [],
@@ -201,7 +197,7 @@ export async function getHistory(): Promise<HistoryEntry[]> {
 export async function deleteHistoryEntry(id: string): Promise<boolean> {
   try {
     const response = await safeFetch(
-      `${SUPABASE_URL}/rest/v1/products_history?id=eq.${encodeURIComponent(id)}`,
+      `${SUPABASE_URL}/rest/v1/products_history?id=eq.${encodeURIComponent(String(id))}`,
       { method: 'DELETE' }
     );