diff --git a/index/builder.go b/index/builder.go
index d02f531e9..47b8b3eed 100644
--- a/index/builder.go
+++ b/index/builder.go
@@ -338,7 +338,7 @@ func (o *Options) shardNameVersion(version, n int) string {
 
 	// If tenant enforcement is enabled and we have tenant/repo IDs, use those to generate the prefix
 	if o.RepositoryDescription.TenantID != 0 && o.RepositoryDescription.ID != 0 && tenant.EnforceTenant() {
-		prefix = tenant.SrcPrefix(o.RepositoryDescription.TenantID, o.RepositoryDescription.ID)
+		prefix = fmt.Sprintf("%09d_%09d", o.RepositoryDescription.TenantID, o.RepositoryDescription.ID)
 	} else {
 		prefix = o.RepositoryDescription.Name
 	}
diff --git a/internal/tenant/shards.go b/internal/tenant/shards.go
deleted file mode 100644
index af4cbb103..000000000
--- a/internal/tenant/shards.go
+++ /dev/null
@@ -1,9 +0,0 @@
-package tenant
-
-import "fmt"
-
-// SrcPrefix returns the Sourcegraph prefix of a shard. We put it here to avoid
-// circular dependencies.
-func SrcPrefix(tenantID int, repoID uint32) string {
-	return fmt.Sprintf("%09d_%09d", tenantID, repoID)
-}