diff --git a/docs/changes/latest.inc b/docs/changes/latest.inc
index f7e833622..2c5e7267f 100644
--- a/docs/changes/latest.inc
+++ b/docs/changes/latest.inc
@@ -81,6 +81,8 @@ Bugs
 
 - Fix a bug in which :class:`junifer.markers.ParcelAggregation` could yield duplicated column names if two or more parcels were used and label names were not unique (:gh:`194` by `Fede Raimondo`_).
 
+- Fix a bug in which :func:`junifer.data.masks.get_mask` fails for FunctionalConnectivityBase class, because of missing extra_input parameter (:gh:`200` by `Leonard Sasse`_)
+
 API changes
 ~~~~~~~~~~~
 
diff --git a/junifer/markers/functional_connectivity/functional_connectivity_base.py b/junifer/markers/functional_connectivity/functional_connectivity_base.py
index dbabe6bd1..72f7ad135 100644
--- a/junifer/markers/functional_connectivity/functional_connectivity_base.py
+++ b/junifer/markers/functional_connectivity/functional_connectivity_base.py
@@ -66,7 +66,11 @@ class FunctionalConnectivityBase(BaseMarker):
         super().__init__(on="BOLD", name=name)
 
     @abstractmethod
-    def aggregate(self, input: Dict[str, Any]) -> Dict[str, Any]:
+    def aggregate(
+        self,
+        input: Dict[str, Any],
+        extra_input: Optional[Dict[str, Any]] = None,
+    ) -> Dict[str, Any]:
         """Perform aggregation."""
         raise_error(
             msg="Concrete classes need to implement aggregate().",
@@ -130,7 +134,7 @@ class FunctionalConnectivityBase(BaseMarker):
 
         """
         # Perform necessary aggregation
-        aggregation = self.aggregate(input)
+        aggregation = self.aggregate(input, extra_input=extra_input)
         # Compute correlation
         if self.cor_method_params["empirical"]:
             connectivity = ConnectivityMeasure(