diff --git a/rpm_s3_mirror/repository.py b/rpm_s3_mirror/repository.py
index 2392df7..9ce87ca 100644
--- a/rpm_s3_mirror/repository.py
+++ b/rpm_s3_mirror/repository.py
@@ -144,6 +144,8 @@ def __init__(self, base_url: str):
             base_url += "/"
         self.base_url = base_url
         self.path = urlparse(base_url).path
+        if self.path.find("//") != -1:
+            raise ValueError("Consecutive slashes detected in URL path")
         self.session = get_requests_session()
 
     def has_updates(self, since: datetime) -> bool: