diff --git a/spec/not_spec.cr b/spec/not_spec.cr
deleted file mode 100644
index d94f888..0000000
--- a/spec/not_spec.cr
+++ /dev/null
@@ -1,42 +0,0 @@
-require "./spec_helper"
-require "../src/crypto-secret/not"
-
-describe Crypto::Secret::Not do
-  it "works" do
-    ksize = 32
-    key = Bytes.new ksize
-    key[1] = 1_u8
-
-    secret1 = Crypto::Secret::Not.copy_from key
-    secret1.readonly { |s| s.should eq key }
-
-    secret2 = Crypto::Secret::Not.copy_from key
-
-    (secret1 == secret2).should be_true
-    secret1.readonly do |s1|
-      secret2.readonly do |s2|
-        (s1 == s2).should be_true
-      end
-    end
-  end
-
-  it "bytesize" do
-    secret = Crypto::Secret::Not.new 5
-    secret.bytesize.should eq 5
-    secret.readonly { |s| s.bytesize.should eq 5 }
-  end
-
-  it "doesn't leak key material when inspecting" do
-    secret = Crypto::Secret::Not.new 5
-    secret.to_s.should match /\(\*\*\*SECRET\*\*\*\)$/
-    secret.inspect.should match /\(\*\*\*SECRET\*\*\*\)$/
-    secret.to_s.should_not match /Bytes|Slice/
-    secret.inspect.should_not match /Bytes|Slice/
-  end
-
-  it "returns a random secret" do
-    secret1 = Crypto::Secret::Not.new 8
-    secret2 = Crypto::Secret::Not.random 8
-    secret1.should_not eq secret2
-  end
-end