diff --git a/ash/whitelist.go b/ash/whitelist.go
index 5ce74799..442753f1 100644
--- a/ash/whitelist.go
+++ b/ash/whitelist.go
@@ -40,7 +40,7 @@ func (m *Matrix) CollectFields(i int, tags ...string) []string {
 	for field, permission := range m.Fields {
 		// ensure field
 		if coal.GetMeta(m.Model).Fields[field] == nil {
-			panic("hash: missing field " + field)
+			panic("ash: missing field " + field)
 		}
 
 		// check tags
diff --git a/blaze/bucket.go b/blaze/bucket.go
index 452ba0a4..b403aa91 100644
--- a/blaze/bucket.go
+++ b/blaze/bucket.go
@@ -47,7 +47,7 @@ func NewBucket(store *coal.Store, notary *heat.Notary, bindings ...*Binding) *Bu
 func (b *Bucket) Use(service Service, name string, upload bool) {
 	// check existence
 	if b.services[name] != nil {
-		panic("duplicate service name")
+		panic("blaze: duplicate service name")
 	}
 
 	// store service