diff --git a/cowmap_test.go b/cowmap_test.go
index 554bc6a..0de55d7 100644
--- a/cowmap_test.go
+++ b/cowmap_test.go
@@ -11,8 +11,6 @@ import (
 func Test_NewCowMap(t *testing.T) {
 	m := NewCowMap()
 	assert.NotNil(t, m)
-	assert.NotNil(t, m.readable)
-}
 }
 
 func Test_CowMapLoad(t *testing.T) {