diff --git a/services/api-server/src/simcore_service_api_server/models/schemas/jobs.py b/services/api-server/src/simcore_service_api_server/models/schemas/jobs.py
index 917e4b4e64d..fef4a19772e 100644
--- a/services/api-server/src/simcore_service_api_server/models/schemas/jobs.py
+++ b/services/api-server/src/simcore_service_api_server/models/schemas/jobs.py
@@ -281,8 +281,8 @@ class Config(BaseConfig):
 
 
 class JobPricingSpecification(BaseModel):
-    pricing_plan: PositiveInt
-    pricing_unit: PositiveInt
+    pricing_plan: PositiveInt = Field(..., alias="x-pricing-plan")
+    pricing_unit: PositiveInt = Field(..., alias="x-pricing-unit")
 
     class Config:
         extra = Extra.ignore
diff --git a/services/api-server/src/simcore_service_api_server/services/webserver.py b/services/api-server/src/simcore_service_api_server/services/webserver.py
index c1cd02bae23..52085d527c8 100644
--- a/services/api-server/src/simcore_service_api_server/services/webserver.py
+++ b/services/api-server/src/simcore_service_api_server/services/webserver.py
@@ -401,7 +401,7 @@ async def put_project_node_pricing_plan_and_unit(
     ) -> None:
         with _handle_webserver_api_errors():
             response = await self.client.put(
-                f"/projects/{project_id}/nodes/{node_id}/pricing-plans/{pricing_plan}/pricing-units/{pricing_unit}",
+                f"/projects/{project_id}/nodes/{node_id}/pricing-plan/{pricing_plan}/pricing-unit/{pricing_unit}",
                 cookies=self.session_cookies,
             )
             response.raise_for_status()