diff --git a/sources/graphics_list_formatter.py b/sources/graphics_list_formatter.py
index f1f24d4..de6c25c 100644
--- a/sources/graphics_list_formatter.py
+++ b/sources/graphics_list_formatter.py
@@ -94,8 +94,10 @@ async def make_commit_day_time_list(time_zone: str) -> str:
 
     for repository in repos:
         result = await DM.get_remote_graphql("repo_committed_dates", owner=repository["owner"]["login"], name=repository["name"], id=GHM.USER.node_id)
-        committed_dates = result["data"]["repository"]["defaultBranchRef"]["target"]["history"]["edges"]
+        if result["data"]["repository"] is None or result["data"]["repository"]["defaultBranchRef"] is None:
+            continue
 
+        committed_dates = result["data"]["repository"]["defaultBranchRef"]["target"]["history"]["edges"]
         for committed_date in committed_dates:
             local_date = datetime.strptime(committed_date["node"]["committedDate"], "%Y-%m-%dT%H:%M:%SZ")
             date = local_date.replace(tzinfo=utc).astimezone(timezone(time_zone))
diff --git a/sources/manager_download.py b/sources/manager_download.py
index 538d0a3..512ea24 100644
--- a/sources/manager_download.py
+++ b/sources/manager_download.py
@@ -67,10 +67,11 @@ GITHUB_API_QUERIES = {
 }
 """,
     # Query to collect info about user commits to given repository, including: commit date, additions and deletions numbers.
+    # TODO: increase branch number with pagination
     "repo_commit_list": """
 {
     repository(owner: "$owner", name: "$name") {
-        refs(refPrefix: "refs/heads/", orderBy: {direction: DESC, field: TAG_COMMIT_DATE}, first: 100) {
+        refs(refPrefix: "refs/heads/", orderBy: {direction: DESC, field: TAG_COMMIT_DATE}, first: 10) {
             edges {
                 node {
                     ... on Ref {