diff --git a/gns3server/controller/__init__.py b/gns3server/controller/__init__.py
index 3f1b1c20..a828f9cf 100644
--- a/gns3server/controller/__init__.py
+++ b/gns3server/controller/__init__.py
@@ -622,13 +622,14 @@ class Controller:
         return Controller._instance
 
     @asyncio.coroutine
-    def autoidlepc(self, compute_id, platform, image):
+    def autoidlepc(self, compute_id, platform, image, ram):
         """
         Compute and IDLE PC value for an image
 
         :param compute_id: ID of the compute where the idlepc operation need to run
         :param platform: Platform type
         :param image: Image to use
+        :param ram: amount of RAM to use
         """
         compute = self.get_compute(compute_id)
         for project in list(self._projects.values()):
@@ -636,7 +637,7 @@ class Controller:
                 yield from project.delete()
                 self.remove_project(project)
         project = yield from self.add_project(name="AUTOIDLEPC")
-        node = yield from project.add_node(compute, "AUTOIDLEPC", str(uuid.uuid4()), node_type="dynamips", platform=platform, image=image, ram=512)
+        node = yield from project.add_node(compute, "AUTOIDLEPC", str(uuid.uuid4()), node_type="dynamips", platform=platform, image=image, ram=ram)
         res = yield from node.dynamips_auto_idlepc()
         yield from project.delete()
         self.remove_project(project)
diff --git a/gns3server/handlers/api/controller/compute_handler.py b/gns3server/handlers/api/controller/compute_handler.py
index de103915..8695c900 100644
--- a/gns3server/handlers/api/controller/compute_handler.py
+++ b/gns3server/handlers/api/controller/compute_handler.py
@@ -185,7 +185,7 @@ class ComputeHandler:
         response.set_status(204)
 
     @Route.post(
-        r"/computes/{compute_id}/autoidlepc",
+        r"/computes/{compute_id}/auto_idlepc",
         parameters={
             "compute_id": "Compute UUID"
         },
@@ -195,6 +195,6 @@ class ComputeHandler:
         description="Compute IDLE PC value")
     def autoidlepc(request, response):
         controller = Controller.instance()
-        res = yield from controller.autoidlepc(request.match_info["compute_id"], request.json["platform"], request.json["image"])
-        response.set_status(200)
+        res = yield from controller.autoidlepc(request.match_info["compute_id"], request.json["platform"], request.json["image"], request.json["ram"])
         response.json(res)
+        response.set_status(200)