diff --git a/pkg/upstream/convert/service.go b/pkg/upstream/convert/service.go
index d2cca33a..44cfd569 100644
--- a/pkg/upstream/convert/service.go
+++ b/pkg/upstream/convert/service.go
@@ -420,6 +420,12 @@ func convertServiceSecrets(
 			return nil, err
 		}
 
+		// NOTE(d1): strip # length=... modifiers
+		if strings.Contains(obj.Name, "#") {
+			vals := strings.Split(obj.Name, "#")
+			obj.Name = strings.TrimSpace(vals[0])
+		}
+
 		file := swarm.SecretReferenceFileTarget(obj.File)
 		refs = append(refs, &swarm.SecretReference{
 			File:       &file,