diff --git a/pyqtgraph/graphicsItems/PlotCurveItem.py b/pyqtgraph/graphicsItems/PlotCurveItem.py
index 20db0abe..05b11b4d 100644
--- a/pyqtgraph/graphicsItems/PlotCurveItem.py
+++ b/pyqtgraph/graphicsItems/PlotCurveItem.py
@@ -273,7 +273,7 @@ class PlotCurveItem(GraphicsObject):
         self.update()
 
     def setShadowPen(self, *args, **kargs):
-        """Set the shadow pen used to draw behind tyhe primary pen.
+        """Set the shadow pen used to draw behind the primary pen.
         This pen must have a larger width than the primary
         pen to be visible.
         """