diff --git a/plantcv/annotate/classes.py b/plantcv/annotate/classes.py
index 62945f9..1a66e78 100644
--- a/plantcv/annotate/classes.py
+++ b/plantcv/annotate/classes.py
@@ -99,15 +99,15 @@ def onclick(self, event):
             self.sample_labels.pop(idx_remove)
         self.fig.canvas.draw()
 
-    def print_coords(self, outfile):
+    def print_coords(self, filename):
         """Save collected coordinates to a file.
         Input variables:
-        outfile = Name of the file to save collected coordinate
+        filename = Name of the file to save collected coordinate
         :param filename: str
         :return:
         """
         # Open the file for writing
-        with open(outfile, "w") as fp:
+        with open(filename, "w") as fp:
             # Save the data in JSON format with indentation
             json.dump(obj=self.coords, fp=fp, indent=4)
 
diff --git a/tests/test_annotate_points.py b/tests/test_annotate_points.py
index 1373f11..f3b91e1 100644
--- a/tests/test_annotate_points.py
+++ b/tests/test_annotate_points.py
@@ -72,7 +72,7 @@ def test_points_print_coords(test_data, tmpdir):
     drawer_rgb.onclick(e2)
 
     # Save collected coords out 
-    drawer_rgb.print_coords(outfile=filename)
+    drawer_rgb.print_coords(filename)
     assert os.path.exists(filename)
 
 def test_points_import_list(test_data):