diff --git a/src/openeo_aggregator/caching.py b/src/openeo_aggregator/caching.py
index d0154d9..628b393 100644
--- a/src/openeo_aggregator/caching.py
+++ b/src/openeo_aggregator/caching.py
@@ -514,7 +514,7 @@ def get_memoizer(memoizer_type: str, memoizer_conf: dict) -> Memoizer:
                     # TODO: better solution than using a module level global here?
                     stats=zk_memoizer_stats,
                 )
-            zookeeper_prefix = get_backend_config().zookeeper_prefix or config.zookeeper_prefix
+            zookeeper_prefix = get_backend_config().zookeeper_prefix
             return ZkMemoizer(
                 client=kazoo_client,
                 path_prefix=f"{zookeeper_prefix}/cache/{namespace}",
diff --git a/src/openeo_aggregator/config.py b/src/openeo_aggregator/config.py
index b1733d4..e4284c8 100644
--- a/src/openeo_aggregator/config.py
+++ b/src/openeo_aggregator/config.py
@@ -42,9 +42,6 @@ class AggregatorConfig(dict):
 
     config_source = dict_item()
 
-    # TODO #112 Deprecated, use AggregatorBackendConfig.zookeeper_prefix instead
-    zookeeper_prefix = dict_item(default="/openeo-aggregator/")
-
     # TODO #112 Deprecated, use AggregatorBackendConfig.memoizer instead
     memoizer = dict_item(default={"type": "dict"})
 
@@ -137,9 +134,7 @@ class AggregatorBackendConfig(OpenEoBackendConfig):
     # List of collection ids to cover with the aggregator (when None: support union of all upstream collections)
     collection_whitelist: Optional[List[Union[str, re.Pattern]]] = None
 
-    # TODO #112: empty default is to allow config migration from AggregatorConfig to AggregatorBackendConfig.
-    #       To be replaced eventually with  "/openeo-aggregator/"
-    zookeeper_prefix: str = ""
+    zookeeper_prefix: str = "/openeo-aggregator/"
 
     # See `memoizer_from_config` for details.
     # TODO #112: empty default is to allow migration. Te be replaced with `attrs.Factory(lambda: {"type": "dict"})`
diff --git a/src/openeo_aggregator/partitionedjobs/zookeeper.py b/src/openeo_aggregator/partitionedjobs/zookeeper.py
index e6d43e6..92099a9 100644
--- a/src/openeo_aggregator/partitionedjobs/zookeeper.py
+++ b/src/openeo_aggregator/partitionedjobs/zookeeper.py
@@ -51,7 +51,7 @@ def from_config(cls, config: AggregatorConfig) -> "ZooKeeperPartitionedJobDB":
         else:
             raise ConfigException("Failed to construct zk_client")
         # Determine ZooKeeper prefix
-        base_prefix = get_backend_config().zookeeper_prefix or config.zookeeper_prefix
+        base_prefix = get_backend_config().zookeeper_prefix
         assert len(base_prefix.replace("/", "")) >= 3
         partitioned_jobs_prefix = pjt_config.get("zookeeper_prefix", cls.NAMESPACE)
         prefix = strip_join("/", base_prefix, partitioned_jobs_prefix)