diff --git a/radicale/sharing/__init__.py b/radicale/sharing/__init__.py
index fbfa3e0e..a13379f7 100644
--- a/radicale/sharing/__init__.py
+++ b/radicale/sharing/__init__.py
@@ -948,7 +948,7 @@ class BaseSharing:
                         answer_array.append(key + '=' + str(answer[key]))
             if 'Content' in answer and answer['Content'] is not None:
                 csv = io.StringIO()
-                writer = DictWriter(csv, fieldnames=DB_FIELDS_V1)
+                writer = DictWriter(csv, fieldnames=DB_FIELDS_V1, delimiter=';')
                 if output_format == "csv":
                     writer.writeheader()
                 for entry in answer['Content']:
@@ -959,7 +959,7 @@ class BaseSharing:
                     index = 0
                     for line in csv.getvalue().splitlines():
                         # create a shell array with content lines
-                        answer_array.append('Content[' + str(index) + ']="' + line + '"')
+                        answer_array.append('Content[' + str(index) + ']="' + line.replace('"', '\\"') + '"')
                         index += 1
             headers = {
                 "Content-Type": "text/csv"
diff --git a/radicale/sharing/csv.py b/radicale/sharing/csv.py
index db68f605..5f565d16 100644
--- a/radicale/sharing/csv.py
+++ b/radicale/sharing/csv.py
@@ -509,7 +509,7 @@ class Sharing(sharing.BaseSharing):
         logger.debug("sharing database load begin: %r", file)
         with self._storage.acquire_lock("r", None):
             with open(file, 'r', newline='') as csvfile:
-                reader = csv.DictReader(csvfile, fieldnames=sharing.DB_FIELDS_V1)
+                reader = csv.DictReader(csvfile, fieldnames=sharing.DB_FIELDS_V1, delimiter=';')
                 self._lines = 0
                 for row in reader:
                     # logger.debug("sharing database load read: %r", row)
@@ -542,6 +542,6 @@ class Sharing(sharing.BaseSharing):
 
     def _write_csv(self, file: str) -> bool:
         with open(file, 'w', newline='') as csvfile:
-            writer = csv.DictWriter(csvfile, fieldnames=sharing.DB_FIELDS_V1)
+            writer = csv.DictWriter(csvfile, fieldnames=sharing.DB_FIELDS_V1, delimiter=';')
             writer.writerows(self._sharing_cache)
         return True