diff --git a/services/web/frontend/js/features/pdf-preview/components/pdf-zoom-buttons.tsx b/services/web/frontend/js/features/pdf-preview/components/pdf-zoom-buttons.tsx
index 56a2901b87..1fa852164e 100644
--- a/services/web/frontend/js/features/pdf-preview/components/pdf-zoom-buttons.tsx
+++ b/services/web/frontend/js/features/pdf-preview/components/pdf-zoom-buttons.tsx
@@ -10,8 +10,8 @@ type PdfZoomButtonsProps = {
 function PdfZoomButtons({ setZoom }: PdfZoomButtonsProps) {
   const { t } = useTranslation()
 
-  const zoomInShortcut = isMac ? '⌘+' : 'Ctrl++'
-  const zoomOutShortcut = isMac ? '⌘-' : 'Ctrl+-'
+  const zoomInShortcut = isMac ? '⌘+' : 'Ctrl +'
+  const zoomOutShortcut = isMac ? '⌘-' : 'Ctrl -'
 
   return (
     <OLButtonGroup className="pdfjs-toolbar-buttons">