diff --git a/gns3server/schemas/drawing.py b/gns3server/schemas/drawing.py
index 5dc06453..b15a5e3c 100644
--- a/gns3server/schemas/drawing.py
+++ b/gns3server/schemas/drawing.py
@@ -50,7 +50,7 @@ DRAWING_OBJECT_SCHEMA = {
         "rotation": {
             "description": "Rotation of the element",
             "type": "integer",
-            "minimum": 0,
+            "minimum": -359,
             "maximum": 360
         },
         "svg": {
diff --git a/gns3server/schemas/label.py b/gns3server/schemas/label.py
index 61a0a227..eae97417 100644
--- a/gns3server/schemas/label.py
+++ b/gns3server/schemas/label.py
@@ -33,7 +33,9 @@ LABEL_OBJECT_SCHEMA = {
         },
         "rotation": {
             "description": "Rotation of the label",
-            "type": "integer"
+            "type": "integer",
+            "minimum": -359,
+            "maximum": 360
         },
     },
     "required": [