diff --git a/test/compiler/fragments/test_recursive_fibo.rb b/test/compiler/fragments/test_recursive_fibo.rb
index 9e5f02e5..382648b3 100644
--- a/test/compiler/fragments/test_recursive_fibo.rb
+++ b/test/compiler/fragments/test_recursive_fibo.rb
@@ -7,7 +7,7 @@ class TestRecursinveFibo < MiniTest::Test
     @string_input = <<HERE
 class Object
   int fibonaccir( int n )
-    if_plus( n - 1 )
+    if_plus( n - 2 )
       int tmp
       tmp = n - 1
       int a = fibonaccir( tmp )
diff --git a/test/compiler/fragments/test_while_fibo.rb b/test/compiler/fragments/test_while_fibo.rb
index ddf5b763..6a398a23 100644
--- a/test/compiler/fragments/test_while_fibo.rb
+++ b/test/compiler/fragments/test_while_fibo.rb
@@ -9,12 +9,11 @@ class Object
   int fibonaccit(int n)
       int a = 0
       int b = 1
-      n = n - 1
-      while_plus( n )
+      while_plus( n - 2)
+        n = n - 1
         int tmp = a
         a = b
         b = tmp + b
-        n = n - 1
       end
       b.putint()
       return b
@@ -30,7 +29,7 @@ HERE
 
   def test_while_fibo48
     fibo 48
-    @length = 1149
+    @length = 1241
     # this is not the correct fibo, just what comes from wrapping (smaller than below)
     check_return 512559680
   end
@@ -38,7 +37,7 @@ HERE
   # highest 32 bit fibo
   def test_while_fibo47
     fibo 47
-    @length = 1126
+    @length = 1216
     check_return 2971215073
   end