diff --git a/frontend/src/contexts/FileContext.tsx b/frontend/src/contexts/FileContext.tsx
index c49a43e38..953c7720f 100644
--- a/frontend/src/contexts/FileContext.tsx
+++ b/frontend/src/contexts/FileContext.tsx
@@ -460,9 +460,8 @@ export function FileContextProvider({
       thumbnailGenerationService.destroy();
 
       // Force garbage collection hint
-      if (typeof window !== 'undefined' && window.gc) {
-        let gc = window.gc
-        setTimeout(() => gc(), 100);
+      if (typeof window !== 'undefined') {
+        setTimeout(() => window.gc && window.gc(), 100);
       }
 
     } catch (error) {
@@ -597,10 +596,9 @@ export function FileContextProvider({
       dispatch({ type: 'SET_CURRENT_MODE', payload: mode });
 
       if (state.currentMode !== mode && state.activeFiles.length > 0) {
-        if (window.requestIdleCallback && typeof window !== 'undefined' && window.gc) {
-          let gc = window.gc;
+        if (window.requestIdleCallback && typeof window !== 'undefined') {
           window.requestIdleCallback(() => {
-            gc();
+            window.gc && window.gc();
           }, { timeout: 5000 });
         }
       }
@@ -612,10 +610,9 @@ export function FileContextProvider({
       dispatch({ type: 'SET_CURRENT_VIEW', payload: view });
 
       if (state.currentView !== view && state.activeFiles.length > 0) {
-        if (window.requestIdleCallback && typeof window !== 'undefined' && window.gc) {
-          let gc = window.gc;
+        if (window.requestIdleCallback && typeof window !== 'undefined') {
           window.requestIdleCallback(() => {
-            gc();
+            window.gc && window.gc();
           }, { timeout: 5000 });
         }
       }
diff --git a/frontend/src/services/enhancedPDFProcessingService.ts b/frontend/src/services/enhancedPDFProcessingService.ts
index aa7802084..64bf69b8a 100644
--- a/frontend/src/services/enhancedPDFProcessingService.ts
+++ b/frontend/src/services/enhancedPDFProcessingService.ts
@@ -519,9 +519,8 @@ export class EnhancedPDFProcessingService {
     this.notifyListeners();
 
     // Force memory cleanup hint
-    if (typeof window !== 'undefined' && window.gc) {
-      let gc = window.gc;
-      setTimeout(() => gc(), 100);
+    if (typeof window !== 'undefined') {
+      setTimeout(() => window.gc && window.gc(), 100);
     }
   }