diff --git a/changelog/+store_default_branch_generator.fixed.md b/changelog/+store_default_branch_generator.fixed.md
new file mode 100644
index 00000000..58275274
--- /dev/null
+++ b/changelog/+store_default_branch_generator.fixed.md
@@ -0,0 +1 @@
+fixes an issue where the default branch of the client store was not properly set in a generator
diff --git a/infrahub_sdk/generator.py b/infrahub_sdk/generator.py
index 24e4bebc..854b3cb4 100644
--- a/infrahub_sdk/generator.py
+++ b/infrahub_sdk/generator.py
@@ -40,6 +40,7 @@ def __init__(
         self.generator_instance = generator_instance
         self._init_client = client.clone()
         self._init_client.config.default_branch = self._init_client.default_branch = self.branch_name
+        self._init_client.store._default_branch = self.branch_name
         self._client: InfrahubClient | None = None
         self._nodes: list[InfrahubNode] = []
         self._related_nodes: list[InfrahubNode] = []