diff --git a/handlers/newObjects.go b/handlers/newObjects.go
index 00fbab5..2800067 100644
--- a/handlers/newObjects.go
+++ b/handlers/newObjects.go
@@ -227,7 +227,7 @@ func (a *RestAPI) NewGetByAttribute(ctx echo.Context, containerID apiserver.Cont
 	res, err := a.search(ctx.Request().Context(), btoken, cnrID, attrKey, attrVal, object.MatchStringEqual)
 	if err != nil {
 		resp := a.logAndGetErrorResponse("could not search for objects", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	defer func() {
@@ -247,7 +247,7 @@ func (a *RestAPI) NewGetByAttribute(ctx echo.Context, containerID apiserver.Cont
 		}
 
 		resp := a.logAndGetErrorResponse("read object list failed", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	var addrObj oid.Address
@@ -287,7 +287,7 @@ func (a *RestAPI) NewHeadByAttribute(ctx echo.Context, containerID apiserver.Con
 	res, err := a.search(ctx.Request().Context(), btoken, cnrID, attrKey, attrVal, object.MatchStringEqual)
 	if err != nil {
 		resp := a.logAndGetErrorResponse("could not search for objects", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	defer func() {
@@ -307,7 +307,7 @@ func (a *RestAPI) NewHeadByAttribute(ctx echo.Context, containerID apiserver.Con
 		}
 
 		resp := a.logAndGetErrorResponse("read object list failed", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	var addrObj oid.Address
diff --git a/handlers/objects.go b/handlers/objects.go
index 2005aa8..3b9ae02 100644
--- a/handlers/objects.go
+++ b/handlers/objects.go
@@ -1044,7 +1044,7 @@ func (a *RestAPI) GetByAttribute(ctx echo.Context, containerID apiserver.Contain
 	res, err := a.search(ctx.Request().Context(), btoken, cnrID, attrKey, attrVal, object.MatchStringEqual)
 	if err != nil {
 		resp := a.logAndGetErrorResponse("could not search for objects", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	defer func() {
@@ -1064,7 +1064,7 @@ func (a *RestAPI) GetByAttribute(ctx echo.Context, containerID apiserver.Contain
 		}
 
 		resp := a.logAndGetErrorResponse("read object list failed", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	var addrObj oid.Address
@@ -1099,7 +1099,7 @@ func (a *RestAPI) HeadByAttribute(ctx echo.Context, containerID apiserver.Contai
 	res, err := a.search(ctx.Request().Context(), btoken, cnrID, attrKey, attrVal, object.MatchStringEqual)
 	if err != nil {
 		resp := a.logAndGetErrorResponse("could not search for objects", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	defer func() {
@@ -1119,7 +1119,7 @@ func (a *RestAPI) HeadByAttribute(ctx echo.Context, containerID apiserver.Contai
 		}
 
 		resp := a.logAndGetErrorResponse("read object list failed", err)
-		return ctx.JSON(http.StatusNotFound, resp)
+		return ctx.JSON(http.StatusInternalServerError, resp)
 	}
 
 	var addrObj oid.Address