diff --git a/internal/handler/handler.go b/internal/handler/handler.go
index 6fa94ca..cc3bd5b 100644
--- a/internal/handler/handler.go
+++ b/internal/handler/handler.go
@@ -86,7 +86,7 @@ func (h *Handler) pullObject(ctx context.Context, record events.S3EventRecord) (
 	}
 
 	// Pre-allocate buffer size.
-	buf := make([]byte, int(head.ContentLength))
+	buf := make([]byte, int(*head.ContentLength))
 
 	w := manager.NewWriteAtBuffer(buf)
 
diff --git a/internal/iamutils/client.go b/internal/iamutils/client.go
index 507ce06..bbc65c9 100644
--- a/internal/iamutils/client.go
+++ b/internal/iamutils/client.go
@@ -22,10 +22,12 @@ type Client struct {
 	NotUsers []string
 }
 
+// IAM client interface.
 type IAM interface {
 	ListUserTags(context.Context, *iam.ListUserTagsInput, ...func(*iam.Options)) (*iam.ListUserTagsOutput, error)
 }
 
+// NewClient for interacting with IAM.
 func NewClient(iam IAM) *Client {
 	return &Client{iam: iam}
 }