diff --git a/myosoft-imcf_identify_fibers.py b/myosoft-imcf_identify_fibers.py
index 195136886a9fb537ce5f603b4bd0f189db1a963f..40bfad05ba7a1b11bc04589b23e20f800d72fe41 100644
--- a/myosoft-imcf_identify_fibers.py
+++ b/myosoft-imcf_identify_fibers.py
@@ -118,17 +118,6 @@ def fix_BF_czi_imagetitle(imp):
     return image_title
 
 
-def clear_ij_roi_manager(rm):
-    """delete all ROIs from the RoiManager
-
-    Parameters
-    ----------
-    rm : RoiManager
-        a reference of the IJ-RoiManager
-    """
-    rm.runCommand('reset')
-
-
 def preprocess_membrane_channel(imp):
     """apply myosoft pre-processing steps for the membrane channel