diff --git a/services/web/frontend/js/features/pdf-preview/components/pdf-synctex-controls.js b/services/web/frontend/js/features/pdf-preview/components/pdf-synctex-controls.js
index 7f1bc193bc..3a17481554 100644
--- a/services/web/frontend/js/features/pdf-preview/components/pdf-synctex-controls.js
+++ b/services/web/frontend/js/features/pdf-preview/components/pdf-synctex-controls.js
@@ -312,6 +312,10 @@ function PdfSynctexControls() {
     }
   }, [syncToCode])
 
+  if (!position) {
+    return null
+  }
+
   if (!pdfExists || pdfViewer === 'native') {
     return null
   }