diff --git a/README.md b/README.md
index 4e6c1b2..cde0781 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # version
 
-A go-language package for managing [k0s](https://github.com/k0sproject/k0s) version numbers. It is based on [hashicorp/go-version](https://github.com/hashicorp/go-version) but adds sorting and comparison capabilities for the k0s version numbering scheme.
+A go-language package for managing [k0s](https://github.com/k0sproject/k0s) version numbers. It is based on [hashicorp/go-version](https://github.com/hashicorp/go-version) but adds sorting and comparison capabilities for the k0s version numbering scheme which requires additional sorting by the build tag.
 
 ## Usage
 
diff --git a/collection.go b/collection.go
index b754f15..fa3000a 100644
--- a/collection.go
+++ b/collection.go
@@ -7,7 +7,7 @@ import "fmt"
 type Collection []*Version
 
 func NewCollection(versions ...string) (Collection, error) {
-	c := make(Collection, len(versions), len(versions))
+	c := make(Collection, len(versions))
 	for i, v := range versions {
 		nv, err := NewVersion(v)
 		if err != nil {
diff --git a/version_test.go b/version_test.go
index ba0b5e9..bb93bab 100644
--- a/version_test.go
+++ b/version_test.go
@@ -10,7 +10,7 @@ func TestNewVersion(t *testing.T) {
 	v, err := NewVersion("1.23.3+k0s.1")
 	assert.NoError(t, err)
 	assert.Equal(t, "1.23.3+k0s.1", v.String())
-	v, err = NewVersion("1.23.b+k0s.1")
+	_, err = NewVersion("1.23.b+k0s.1")
 	assert.Error(t, err)
 }