diff --git a/README.md b/README.md
index aa49bda..06ab7a6 100644
--- a/README.md
+++ b/README.md
@@ -250,7 +250,7 @@ Always returns the given value. No shrinking.
 
 Allows you to take the result of one generator and transform it into something else.
     
-    >> G.choose(32..128).map(&:chr).sample(1, size: 10, Random.new(42))
+    >> G.choose(32..128).map(&:chr).sample(1, size: 10, rng: Random.new(42))
     => ["S"]
 
 #### Generator#bind
@@ -262,7 +262,7 @@ Allows you to create one or another generator conditionally on the output of ano
 
 This is an advanced feature. Often, you can use a combination of `Generators.tuple` and `Generator#map` instead:
 
-    >> G.tuple(integer, integer).sample(1, size: 100, rng: Random.new(42)
+    >> G.tuple(G.integer, G.integer).sample(1, size: 100, rng: Random.new(42))
     => [[2, 79]]
 
 #### Generators.one_of