diff --git a/swh/indexer/metadata_dictionary.py b/swh/indexer/metadata_dictionary.py
--- a/swh/indexer/metadata_dictionary.py
+++ b/swh/indexer/metadata_dictionary.py
@@ -395,10 +395,11 @@
         ... ''')
         >>> MavenMapping().parse_repositories(d)
         """
-        if 'repositories' not in d:
+        repositories = d.get('repositories')
+        if not repositories:
             results = [self.parse_repository(d, self._default_repository)]
         else:
-            repositories = d.get('repositories', {}).get('repository', [])
+            repositories = repositories.get('repository') or []
             if not isinstance(repositories, list):
                 repositories = [repositories]
             results = [self.parse_repository(d, repo)
diff --git a/swh/indexer/tests/test_metadata.py b/swh/indexer/tests/test_metadata.py
--- a/swh/indexer/tests/test_metadata.py
+++ b/swh/indexer/tests/test_metadata.py
@@ -649,6 +649,64 @@
             'https://repo.maven.apache.org/maven2/com/mycompany/app/my-app',
         })
 
+    def test_compute_metadata_maven_empty_nodes(self):
+        raw_content = b"""
+        <project>
+          <name>Maven Default Project</name>
+          <modelVersion>4.0.0</modelVersion>
+          <groupId>com.mycompany.app</groupId>
+          <artifactId>my-app</artifactId>
+          <version>1.2.3</version>
+          <repositories>
+          </repositories>
+        </project>"""
+        result = self.maven_mapping.translate(raw_content)
+        self.assertEqual(result, {
+            '@context': 'https://doi.org/10.5063/schema/codemeta-2.0',
+            'type': 'SoftwareSourceCode',
+            'name': 'Maven Default Project',
+            'identifier': 'com.mycompany.app',
+            'version': '1.2.3',
+            'codeRepository':
+            'https://repo.maven.apache.org/maven2/com/mycompany/app/my-app',
+        })
+
+        raw_content = b"""
+        <project>
+          <name>Maven Default Project</name>
+          <modelVersion>4.0.0</modelVersion>
+          <groupId>com.mycompany.app</groupId>
+          <artifactId>my-app</artifactId>
+          <version></version>
+        </project>"""
+        result = self.maven_mapping.translate(raw_content)
+        self.assertEqual(result, {
+            '@context': 'https://doi.org/10.5063/schema/codemeta-2.0',
+            'type': 'SoftwareSourceCode',
+            'name': 'Maven Default Project',
+            'identifier': 'com.mycompany.app',
+            'codeRepository':
+            'https://repo.maven.apache.org/maven2/com/mycompany/app/my-app',
+        })
+
+        raw_content = b"""
+        <project>
+          <name></name>
+          <modelVersion>4.0.0</modelVersion>
+          <groupId>com.mycompany.app</groupId>
+          <artifactId>my-app</artifactId>
+          <version>1.2.3</version>
+        </project>"""
+        result = self.maven_mapping.translate(raw_content)
+        self.assertEqual(result, {
+            '@context': 'https://doi.org/10.5063/schema/codemeta-2.0',
+            'type': 'SoftwareSourceCode',
+            'identifier': 'com.mycompany.app',
+            'version': '1.2.3',
+            'codeRepository':
+            'https://repo.maven.apache.org/maven2/com/mycompany/app/my-app',
+        })
+
     def test_compute_metadata_maven_multiple(self):
         '''Tests when there are multiple code repos and licenses.'''
         raw_content = b"""