diff --git a/scripts/annotate/fix_annotations.py b/scripts/annotate/fix_annotations.py
new file mode 100644
index 00000000..3ec241a0
--- /dev/null
+++ b/scripts/annotate/fix_annotations.py
@@ -0,0 +1,77 @@
+import argparse
+import re
+import omero.cli
+
+
+parser = argparse.ArgumentParser(description="Generate SQL script to fix duplicated URL annotations")
+parser.add_argument("url", help="Regex of the URL to check for (incl a named group to match the ID!)"
+                                ", e.g. \".+ncbi\.nlm\.nih\.gov\/gene\/(?P<ID>.+)\"")
+parser.add_argument("namespace", help="The namespace of the annotations, e.g. openmicroscopy.org/mapr/gene")
+
+url_names = {"openmicroscopy.org/mapr/gene": "Gene Identifier URL",
+             "openmicroscopy.org/mapr/compound": "Compound Name URL",
+             "openmicroscopy.org/mapr/phenotype": "Phenotype Term Accession URL",
+             "openmicroscopy.org/mapr/antibody": "Antibody Identifier URL"}
+
+pref_urls = [re.compile(r"^https:\/\/(?!www).+"),\
+             re.compile(r"^https:\/\/.+")] # prefer https:// without www over with www
+
+
+def get_annotations(conn, namespace):
+    """
+    Get all map annotation with the specific namespace
+    :param conn: Reference to the BlitzGateway
+    :param namespace: The namespace
+    :return: Generator for map annotations
+    """
+    metadataService = conn.getMetadataService()
+    annotations = metadataService.loadSpecifiedAnnotations(
+        'omero.model.MapAnnotation', [namespace], None, None)
+    for ann in annotations:
+        yield ann
+
+
+def get_urls(ann, pattern):
+    """
+    Get all URLs from the map annotation matching the given pattern
+    :param ann: The map annotation
+    :param pattern: The regex pattern
+    :return: Dictionary with lists of URLs (key: ID)
+    """
+    urls = dict()
+    for nv in ann._mapValue:
+        if nv.name == url_names[ann._ns._val]:
+            m = pattern.match(nv.value)
+            if m:
+                if m.group("ID") not in urls:
+                    urls[m.group("ID")] = []
+                urls[m.group("ID")].append(nv.value)
+    return urls
+
+
+def check_annotations(conn, args):
+    pattern = re.compile(f"{args.url}")
+    for ann in get_annotations(conn, args.namespace):
+        for id, urls in get_urls(ann, pattern).items():
+            if (len(urls) > 1):
+                url_to_keep = None
+                for url in urls:
+                    for pref_url in pref_urls:
+                        if pref_url.match(url):
+                            url_to_keep = url
+                            break
+                    if url_to_keep:
+                        break
+                if url_to_keep:
+                    print(f"-- ID: {id} - Annotation ID: {ann._id._val}")
+                    print(f"-- URLs: {urls} - keep: {url_to_keep}")
+                    for url in urls:
+                        if url != url_to_keep:
+                            print(f"DELETE FROM annotation_mapvalue mv WHERE mv.annotation_id = {ann._id._val} AND mv.value = '{url}';\n")
+
+
+args = parser.parse_args()
+with omero.cli.cli_login() as c:
+    conn = omero.gateway.BlitzGateway(client_obj=c.get_client())
+    check_annotations(conn, args)
+