diff --git a/archives/archives.go b/archives/archives.go
index d46e3d3..a96b6f3 100644
--- a/archives/archives.go
+++ b/archives/archives.go
@@ -556,13 +556,13 @@ func UploadArchive(ctx context.Context, rt *runtime.Runtime, archive *Archive) e
 	archivePath := ""
 	if archive.Period == DayPeriod {
 		archivePath = fmt.Sprintf(
-			"/%d/%s_%s%d%02d%02d_%s.jsonl.gz",
+			"%d/%s_%s%d%02d%02d_%s.jsonl.gz",
 			archive.Org.ID, archive.ArchiveType, archive.Period,
 			archive.StartDate.Year(), archive.StartDate.Month(), archive.StartDate.Day(),
 			archive.Hash)
 	} else {
 		archivePath = fmt.Sprintf(
-			"/%d/%s_%s%d%02d_%s.jsonl.gz",
+			"%d/%s_%s%d%02d_%s.jsonl.gz",
 			archive.Org.ID, archive.ArchiveType, archive.Period,
 			archive.StartDate.Year(), archive.StartDate.Month(),
 			archive.Hash)
diff --git a/archives/s3.go b/archives/s3.go
index 83bdc9d..1d42d6a 100644
--- a/archives/s3.go
+++ b/archives/s3.go
@@ -21,7 +21,7 @@ import (
 	"github.com/nyaruka/rp-archiver/runtime"
 )
 
-const s3BucketURL = "https://%s.s3.amazonaws.com%s"
+const s3BucketURL = "https://%s.s3.amazonaws.com/%s"
 
 // any file over this needs to be uploaded in chunks
 const maxSingleUploadBytes = 5e9 // 5GB