diff --git a/package.json b/package.json
index 88ef079..c94ac5b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "cod-dicomweb-server",
   "title": "COD Dicomweb server",
-  "version": "1.3.15",
+  "version": "1.3.16",
   "private": false,
   "description": "A wadors server proxy that get data from a Cloud Optimized Dicom format.",
   "main": "dist/umd/main.js",
diff --git a/src/classes/CodDicomWebServer.ts b/src/classes/CodDicomWebServer.ts
index 62e3b0e..28172a4 100644
--- a/src/classes/CodDicomWebServer.ts
+++ b/src/classes/CodDicomWebServer.ts
@@ -414,7 +414,7 @@ class CodDicomWebServer {
         const directoryHandle = await getDirectoryHandle();
         const fileSystemFile = (await readFile(directoryHandle, createStreamingFileName(seriesFileURL))) as ArrayBuffer;
 
-        if (fileSystemFile?.byteLength) {
+        if (!fileSystemFile?.byteLength) {
           return false;
         }