diff --git a/internal/domain/main-entities/unit/dto.go b/internal/domain/main-entities/unit/dto.go
index eca0594f..e47afed9 100644
--- a/internal/domain/main-entities/unit/dto.go
+++ b/internal/domain/main-entities/unit/dto.go
@@ -51,7 +51,7 @@ type MetaDto struct {
 type ResponseDto struct {
 	ecore.SmallMain
 	Installation_Id *uint16          `json:"installation_id"`
-	Installation    *ei.Installation `json:"installation"`
+	Installation    *ei.Installation `json:"installation,omitempty"`
 	Code            string           `json:"code"`
 	Name            string           `json:"name"`
 	UnitPositions   []eipb.Basic     `json:"unitPositions,omitempty"`