diff --git a/src/ich/args_in.py b/src/ich/args_in.py
index 69b07cd58d9ba9add38bbbe96505e92657d00304..4c38560d6e4e08dd6cf57aada9cf9e47e57a809f 100644
--- a/src/ich/args_in.py
+++ b/src/ich/args_in.py
@@ -26,7 +26,7 @@ from scipy.interpolate import interpn
 from empatches import EMPatches
 from sklearn.model_selection import train_test_split
 from plotting import density_scatter, plot_data, rmse
-from algo import arc_sinc, arc_sinc_, arc_sinc_vectorized, cal_, dynamicWindow
+from algo import arc_sinc, arc_sinc_vectorized, cal_, dynamicWindow
 from rst_io import read_bin, write_tif, write_bin
 from utils import blockshaped, unblockshaped, unpad, spatial_intp_lin, split_sample