diff --git a/sources/02a-data-retrieval-corrupted-zip-files.ipynb b/sources/02a-data-retrieval-corrupted-zip-files.ipynb
index bc6c4f8..96f5af2 100644
--- a/sources/02a-data-retrieval-corrupted-zip-files.ipynb
+++ b/sources/02a-data-retrieval-corrupted-zip-files.ipynb
@@ -6,7 +6,7 @@
    "source": [
     "# ZIP-File Corruption Issues\n",
     "\n",
-    "The Copernicus Open Access Hub has a policy of [moving data into a Long-Term-Archive after a certain period of time](\"https://scihub.copernicus.eu/userguide/LongTermArchive\").\n",
+    "The Copernicus Open Access Hub has a policy of [moving data to a Long-Term-Archive after a certain period of time](https://scihub.copernicus.eu/userguide/LongTermArchive).\n",
     "Retrieval of files from this offline archive is a two step process:\n",
     "\n",
     "1. A request to the URL that initializes the download for online products (`https://scihub.copernicus.eu/dhus/odata/v1/Products('$UUID')/$value`) instead initializes a data retrieval request which moves the archived file from offline to online storage.\n",