diff --git a/contributor_stats.py b/contributor_stats.py
index 7ddb36d..1200f65 100644
--- a/contributor_stats.py
+++ b/contributor_stats.py
@@ -153,10 +153,12 @@ def get_sponsor_information(contributors: list, token: str, ghe: str) -> list:
         variables = {"username": contributor.username}
 
         # Send the GraphQL request
-        api_endpoint = f"{ghe}/api/v3" if ghe else "https://api.github.com"
+        api_endpoint = (
+            f"{ghe}/api/v3".removeprefix("https://") if ghe else "api.github.com"
+        )
         headers = {"Authorization": f"Bearer {token}"}
         response = requests.post(
-            f"{api_endpoint}/graphql",
+            f"https://{api_endpoint}/graphql",
             json={"query": query, "variables": variables},
             headers=headers,
             timeout=60,
diff --git a/contributors.py b/contributors.py
index 102b854..42491c0 100644
--- a/contributors.py
+++ b/contributors.py
@@ -173,7 +173,7 @@ def get_contributors(repo: object, start_date: str, end_date: str, ghe: str):
                     continue
 
             # Store the contributor information in a ContributorStats object
-            api_endpoint = ghe if ghe else "github.com"
+            api_endpoint = ghe.removeprefix("https://") if ghe else "github.com"
             if start_date and end_date:
                 commit_url = f"https://{api_endpoint}/{repo.full_name}/commits?author={user.login}&since={start_date}&until={end_date}"
             else: