diff --git a/lib/xmet/skew_t.py b/lib/xmet/skew_t.py
index 045940c..7dd42b8 100644
--- a/lib/xmet/skew_t.py
+++ b/lib/xmet/skew_t.py
@@ -28,7 +28,7 @@ def clamp(value, lowest, highest):
 
     return value
 
-class SkewT():
+class SkewTGraph():
     __slots__ = 'width', 'height', 'temp_step_width',
 
     def __init__(self, width: float, height: float):