diff --git a/diy1.py b/diy1.py
index 90e4a03..70ee9cc 100644
--- a/diy1.py
+++ b/diy1.py
@@ -1,13 +1,13 @@
 import turtle
-def heart(pen,len)
-pen.pencolor("red")
-pen.pensize(10)
-pen.left(45)
-pen.forward(2*len)
-pen.circle(len,180)
-pen.right(90)
-pen.circle(len,180)
-pen.forward(2*len)
+def heart(pen,len):
+    pen.pencolor("red")
+    pen.pensize(10)
+    pen.left(45)
+    pen.forward(2*len)
+    pen.circle(len,180)
+    pen.right(90)
+    pen.circle(len,180)
+    pen.forward(2*len)
 screen=turtle.Screen()
 screen.bgcolor("light blue")
 pen=turtle.Pen()