diff --git a/Inst_eddies/inst_eddies_in.py b/Inst_eddies/inst_eddies_in.py
index adc2e0bbe89b4f2b2322623e5f13c39c2d7c5ca3..2862bd35286d448eb2af0284ac3c37e74c261fe3 100755
--- a/Inst_eddies/inst_eddies_in.py
+++ b/Inst_eddies/inst_eddies_in.py
@@ -28,7 +28,7 @@ def loop_inst_eddies(files, bbox, d):
     if os.access("main_nml.txt", os.R_OK):
         print("Will use main_nml.txt.")
     else:
-        sys.exit('"main_nml.txt" not found')
+        sys.exit('inst_eddies.py: "main_nml.txt" not found')
 
     nco_instance = nco.Nco()
 
@@ -50,8 +50,10 @@ def loop_inst_eddies(files, bbox, d):
             if bbox:
                 xmin, xmax, ymin, ymax = bbox
                 nco_instance.ncks(nc_file, output = "cropped.nc",
-                                  options = [f"--dimension=longitude,{xmin},{xmax}",
-                                             f"--dimension=latitude,{ymin},{ymax}"])
+                                  options = [f"--dimension=longitude,{xmin},"
+                                             f"{xmax}",
+                                             f"--dimension=latitude,{ymin},"
+                                             f"{ymax}"])
                 nc_file = "cropped.nc"
 
             nco_instance.ncpdq(nc_file, output = "unpacked.nc",
@@ -70,7 +72,8 @@ def loop_inst_eddies(files, bbox, d):
             print("inst_eddies.py: Missing file:", nc_file)
 
             for orient in ["cyclo", "anti"]:
-                with open(f"SHPC_{orient}/ishape_last.txt", "a") as ishape_last, \
+                with open(f"SHPC_{orient}/ishape_last.txt", "a") \
+                     as ishape_last, \
                      shapefile.Reader(f"SHPC_{orient}/extremum") as shpr:
                     n_shapes = len(shpr)
                     ishape_last.write(str(n_shapes - 1) + "\n")