diff --git a/src/Assignment7/Ex2.sc b/src/Assignment7/Ex2.sc
index 6dda8d6..68e7fcd 100644
--- a/src/Assignment7/Ex2.sc
+++ b/src/Assignment7/Ex2.sc
@@ -3,7 +3,7 @@ def intsFrom(n: Int): LazyList[Int] = {
 }
 
 def primeNumbers(list: LazyList[Int]): LazyList[Int] = {
-  list.head #:: primeNumbers(list.filter(n => n % list.head != 0))
+  list.head #:: primeNumbers(list.tail.filter(n => n % list.head != 0))
 }
 val ints: LazyList[Int] = intsFrom(2)
 primeNumbers(ints).take(10).toList
\ No newline at end of file
diff --git a/src/Assignment7/Ex3.sc b/src/Assignment7/Ex3.sc
index 7b73a63..f7553ea 100644
--- a/src/Assignment7/Ex3.sc
+++ b/src/Assignment7/Ex3.sc
@@ -3,9 +3,9 @@ def addStream(s1: LazyList[Int], s2: LazyList[Int]): LazyList[Int] = {
 }
 
 def fibonacci(): LazyList[Int] = {
-  0 #:: addStream(
-    1 #:: fibonacci(),
-    fibonacci()
+  0 #:: 1 #:: addStream(
+    fibonacci(),
+    fibonacci().tail
   )
 }