1 files changed, 7 insertions, 5 deletions
diff --git a/src/client/views/pdf/PDFViewer.tsx b/src/client/views/pdf/PDFViewer.tsx
index d8130ce63..64f150dd5 100644
--- a/src/client/views/pdf/PDFViewer.tsx
+++ b/src/client/views/pdf/PDFViewer.tsx
@@ -641,11 +641,13 @@ export class PDFViewer extends ViewBoxAnnotatableComponent<IViewerProps, PdfDocu
 
     @action
     onZoomWheel = (e: React.WheelEvent) => {
-        e.stopPropagation();
-        if (e.ctrlKey) {
-            const curScale = Number(this._pdfViewer.currentScaleValue);
-            this._pdfViewer.currentScaleValue = Math.max(1, Math.min(10, curScale - curScale * e.deltaY / 1000));
-            this._zoomed = Number(this._pdfViewer.currentScaleValue);
+        if (this.active()) {
+            e.stopPropagation();
+            if (e.ctrlKey) {
+                const curScale = Number(this._pdfViewer.currentScaleValue);
+                this._pdfViewer.currentScaleValue = Math.max(1, Math.min(10, curScale - curScale * e.deltaY / 1000));
+                this._zoomed = Number(this._pdfViewer.currentScaleValue);
+            }
         }
     }