diff --git a/client/src/views/import/step1.js b/client/src/views/import/step1.js
index 8020af27b5..3fdde930b9 100644
--- a/client/src/views/import/step1.js
+++ b/client/src/views/import/step1.js
@@ -486,7 +486,7 @@ class Step1ImportView extends View {
      * @param {File} file
      */
     loadFile(file) {
-        const blob = file.slice(0, 1024 * 16);
+        const blob = file.slice(0, 1024 * 512);
 
         const readerPreview = new FileReader();