diff --git a/app/webroot/js/misp.js b/app/webroot/js/misp.js
index 2d1743b77..69456aa10 100644
--- a/app/webroot/js/misp.js
+++ b/app/webroot/js/misp.js
@@ -80,7 +80,9 @@ function genericPopup(url, popupTarget, callback) {
 }
 
 function screenshotPopup(url, title) {
-    url = url.slice(0, -1);
+    if (!url.startsWith('data:image/')) {
+        url = url.slice(0, -1);
+    }
     popupHtml = '<it class="fa fa-spin fa-spinner" style="font-size: xx-large; color: white; position: fixed; left: 50%; top: 50%;"></it>'
     popupHtml += '<img class="screenshot_box-content hidden" src="' + url + '" id="screenshot-image" title="' + title + '" alt="' + title + '" onload="$(this).show(); $(this).parent().find(\'.fa-spinner\').remove();"/>';
     popupHtml += '<div class="close-icon useCursorPointer" onClick="closeScreenshot();"></div>';