diff --git a/newtons_method_optimization.py b/newtons_method_optimization.py
index 0ba53ea..6c1e09b 100644
--- a/newtons_method_optimization.py
+++ b/newtons_method_optimization.py
@@ -16,8 +16,8 @@
 
 
 def dfdx(x, g):
-    return [float(g[i].subs(m[0], x[0]).subs(m[1], x[1])) for i in range(len(g))]
-
+    return [float(g[i].subs(m[0], x[0]).subs(m[1], x[1]))
+            for i in range(len(g))]
 
 def sd(alpha=0.0002):
     """