diff --git a/platform/blueprint/builtin/db.go b/platform/blueprint/builtin/db.go
index 9edd54ed..b8427c67 100644
--- a/platform/blueprint/builtin/db.go
+++ b/platform/blueprint/builtin/db.go
@@ -125,7 +125,7 @@ func (db *DB) BlueprintByName(name string) (*blueprint.Blueprint, error) {
 			return &notFound{"Blueprint", fmt.Sprintf("name %s", name)}
 		}
 		v := b.Get(idx)
-		if idx == nil {
+		if v == nil {
 			return &notFound{"Blueprint", fmt.Sprintf("uuid %s", string(idx))}
 		}
 		return blueprint.UnmarshalBlueprint(v, &bp)
diff --git a/platform/device/builtin/db.go b/platform/device/builtin/db.go
index 2099a2c1..049e3ac4 100644
--- a/platform/device/builtin/db.go
+++ b/platform/device/builtin/db.go
@@ -185,7 +185,7 @@ func (db *DB) deviceByIndex(key string) (*device.Device, error) {
 			return &notFound{"Device", fmt.Sprintf("key %s", key)}
 		}
 		v := b.Get(idx)
-		if idx == nil {
+		if v == nil {
 			return &notFound{"Device", fmt.Sprintf("uuid %s", string(idx))}
 		}
 		return device.UnmarshalDevice(v, &dev)
diff --git a/platform/user/builtin/db.go b/platform/user/builtin/db.go
index 49ab6e25..d6d90ced 100644
--- a/platform/user/builtin/db.go
+++ b/platform/user/builtin/db.go
@@ -122,7 +122,7 @@ func (db *DB) UserByUserID(userID string) (*user.User, error) {
 			return &notFound{"User", fmt.Sprintf("user id %s", userID)}
 		}
 		v := b.Get(idx)
-		if idx == nil {
+		if v == nil {
 			return &notFound{"User", fmt.Sprintf("uuid %s", string(idx))}
 		}
 		return user.UnmarshalUser(v, &u)