diff --git a/ogc/bblocks/util.py b/ogc/bblocks/util.py
index c49ee71..74da9a9 100644
--- a/ogc/bblocks/util.py
+++ b/ogc/bblocks/util.py
@@ -340,7 +340,10 @@ def walk_schema(schema):
                 ref = schema.get(BBLOCKS_REF_ANNOTATION, schema.get('$ref'))
                 if isinstance(ref, str):
                     ref = re.sub(r'#.*$', '', ref)
-                    if ref.startswith('bblocks://'):
+                    if ref == f"bblocks://{bblock.identifier}":
+                        # A self-reference is not a dependency
+                        pass
+                    elif ref.startswith('bblocks://'):
                         # Get id directly from bblocks:// URI
                         deps.add(ref[len('bblocks://'):])
                     elif ref in self.imported_bblock_schemas: