diff --git a/source/py_tutorials/py_imgproc/py_houghlines/py_houghlines.rst b/source/py_tutorials/py_imgproc/py_houghlines/py_houghlines.rst
index ba3c0b3..6287d21 100644
--- a/source/py_tutorials/py_imgproc/py_houghlines/py_houghlines.rst
+++ b/source/py_tutorials/py_imgproc/py_houghlines/py_houghlines.rst
@@ -100,7 +100,7 @@ Best thing is that, it directly returns the two endpoints of lines. In previous
     edges = cv2.Canny(gray,50,150,apertureSize = 3)
     minLineLength = 100
     maxLineGap = 10
-    lines = cv2.HoughLinesP(edges,1,np.pi/180,100,minLineLength,maxLineGap)
+    lines = cv2.HoughLinesP(edges,1,np.pi/180,100,minLineLength=minLineLength,maxLineGap=maxLineGap)
     for x1,y1,x2,y2 in lines[0]:
         cv2.line(img,(x1,y1),(x2,y2),(0,255,0),2)