diff --git a/measprocess/geospatial.py b/measprocess/geospatial.py
index 46260d1565644f85398001bdd0a13d28bc200d05..b91eaa925a5e38ea3bde4d42556245ffa8fa6dbc 100644
--- a/measprocess/geospatial.py
+++ b/measprocess/geospatial.py
@@ -1,7 +1,6 @@
 import overpy
 import geopandas as gpd
 from shapely.geometry import LineString, Polygon
-import networkx as nx
 from scipy.spatial.distance import cdist
 import numpy as np
 import warnings
diff --git a/measprocess/preprocess.py b/measprocess/preprocess.py
index f97e30c5f38bd20961784b1bfa47bc8183c59082..ee0a9605bc97632537d33a610c91064d0ff291d5 100644
--- a/measprocess/preprocess.py
+++ b/measprocess/preprocess.py
@@ -8,7 +8,7 @@ def link_dataframes(A: pd.DataFrame, B: pd.DataFrame, ref_col: str, unique_col=N
 
     :param ref_col: Reference Column to merge dataframes. Has to exist in both frames
     :param metric: Metric used to determine matches in ref_col. Default lambda a, b: (a - b).abs()
-    :param unique_per_index_col: Is needed for scanner where
+    :param unique_col: Is needed for scanner where indices and timestamps are not unique unique_col="PCI"
 
     :return: Single merged dataframe consisting of a multiindex from A and B
     '''