diff --git a/src/changes.rs b/src/changes.rs
index 0cfba16..6e68980 100644
--- a/src/changes.rs
+++ b/src/changes.rs
@@ -1,21 +1,39 @@
+use octocrab::models::pulls::Review;
+use octocrab::models::pulls::ReviewState::Approved;
+
 #[derive(Clone, Debug)]
 pub struct RepoChangeset {
-    pub name: String,
-    pub remote: String,
+    pub name:        String,
+    pub remote:      String,
     pub base_commit: String,
     pub head_commit: String,
-    pub changes: Vec<Changeset>,
+    pub changes:     Vec<Changeset>,
 }
 
 #[derive(Clone, Debug)]
 pub struct Changeset {
-    pub commits: Vec<CommitMetadata>,
-    pub pr_link: Option<String>,
+    pub commits:   Vec<CommitMetadata>,
+    pub pr_link:   Option<String>,
     pub approvals: Vec<String>,
 }
 
+impl Changeset {
+    pub fn collect_approved_reviews(&mut self, pr_reviews: &[Review]) {
+        for pr_review in pr_reviews {
+            // TODO: do we need to check if this is the last review of the user?
+            if pr_review.state == Some(Approved) {
+                let Some(ref user) = pr_review.user else {
+                    continue;
+                };
+
+                self.approvals.push(user.login.clone());
+            }
+        }
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct CommitMetadata {
     pub headline: String,
-    pub link: String,
+    pub link:     String,
 }
diff --git a/src/helm_config.rs b/src/helm_config.rs
index 0d8f286..c3d0b5b 100644
--- a/src/helm_config.rs
+++ b/src/helm_config.rs
@@ -11,14 +11,14 @@ pub struct ImageRefs {
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct ImageRef {
-    pub account: String,
+    pub account:    String,
     pub repository: String,
-    pub tag: String,
-    pub sources: Vec<SourceRepoRef>,
+    pub tag:        String,
+    pub sources:    Vec<SourceRepoRef>,
 }
 
 #[derive(Debug, Serialize, Deserialize)]
 pub struct SourceRepoRef {
-    pub repo: String,
+    pub repo:   String,
     pub commit: String,
 }
diff --git a/src/main.rs b/src/main.rs
index d78b29e..f2adea4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -14,8 +14,6 @@ use git2::Repository;
 use helm_config::ImageRefs;
 use lazy_static::lazy_static;
 use octocrab::commits::PullRequestTarget;
-use octocrab::models::pulls;
-use octocrab::models::pulls::ReviewState;
 use octocrab::Octocrab;
 use url::Url;
 
@@ -263,7 +261,7 @@ async fn find_reviews(octocrab: &Arc<Octocrab>, repo: &mut RepoChangeset) -> Res
 
             if let Some(changeset) = repo.changes.iter_mut().find(|cs| cs.pr_link == associated_pr_link) {
                 changeset.commits.push(change_commit.clone());
-                collect_approved_reviews(&pr_reviews, changeset)?;
+                changeset.collect_approved_reviews(&pr_reviews);
                 continue;
             }
 
@@ -273,7 +271,7 @@ async fn find_reviews(octocrab: &Arc<Octocrab>, repo: &mut RepoChangeset) -> Res
                 approvals: Vec::new(),
             };
 
-            collect_approved_reviews(&pr_reviews, &mut changeset)?;
+            changeset.collect_approved_reviews(&pr_reviews);
             repo.changes.push(changeset);
         }
     }
@@ -316,24 +314,6 @@ fn print_changes(changes: &[RepoChangeset]) {
     }
 }
 
-fn collect_approved_reviews(pr_reviews: &[pulls::Review], review: &mut Changeset) -> Result<(), anyhow::Error> {
-    for pr_review in pr_reviews {
-        // TODO: do we need to check if this is the last review of the user?
-        if pr_review.state.ok_or(anyhow!("review has no state"))? == ReviewState::Approved {
-            review.approvals.push(
-                pr_review
-                    .user
-                    .as_ref()
-                    .ok_or(anyhow!("review without an user!?"))?
-                    .login
-                    .clone(),
-            );
-        }
-    }
-
-    Ok(())
-}
-
 // for commits take the first 6 chars
 // https://github.com/sapcc/tenso/commit/39241382cc5de6ab54eb34f6ac09dfb740cbee701
 // -> [tenso 392413](https://github.com/sapcc/tenso/commit/39241382cc5de6ab54eb34f6ac09dfb740cbee701)