diff --git a/ItalicExtremes.glyphsFilter/Contents/Resources/plugin.py b/ItalicExtremes.glyphsFilter/Contents/Resources/plugin.py
index 3aeafa4..e471f58 100755
--- a/ItalicExtremes.glyphsFilter/Contents/Resources/plugin.py
+++ b/ItalicExtremes.glyphsFilter/Contents/Resources/plugin.py
@@ -171,7 +171,7 @@ def get_pathTime_for_angle(layer, pathIdx, nodeIdx, pathTime, inputAngle):
 					p2 = path.nodes[idx - 2].position
 					p3 = path.nodes[idx - 1].position
 					p4 = node.position
-					allTs = GSExtremTimesOfBezier(p1, p2, p3, p4, None, None, None, None)
+					allTs = GSExtremeTimesOfBezier(p1, p2, p3, p4, None, None, None, None)
 					Ts = [x for x in allTs if x < 1]
 					if len(Ts) > 0:
 						pathTime = idx + Ts[0]