diff --git a/esds/helpers/platform.py b/esds/helpers/platform.py
index fdbf29e..b7e5637 100644
--- a/esds/helpers/platform.py
+++ b/esds/helpers/platform.py
@@ -137,6 +137,8 @@ class YAMLPlatformFile:
             if not str(nodes["count"]).isnumeric():
                 self.parsing_error("node count should be a number")
             self.default["node_count"]=nodes["count"]
+        else:
+            self.parsing_error("node count not provided")
         if "implementations" in nodes:
             if type(nodes["implementations"]) != list:
                 self.parsing_error("nodes implementations should be a list of file path")
@@ -155,7 +157,9 @@ class YAMLPlatformFile:
             count = len(nodes["implementations"])
             if count > 1 and count != self.default["node_count"]:
                 self.parsing_error("If more than one implementation is specified, each node implementation should be provided ("+str(self.default["node_count"])+" in total)")
-            
+        else:
+            self.parsing_error("node implementation not provided")
+
 
     def parse_general(self):
         general=self.platform["general"]
diff --git a/example/platform.yaml b/example/platform.yaml
index 5aa65e3..cf8c3f8 100644
--- a/example/platform.yaml
+++ b/example/platform.yaml
@@ -7,7 +7,6 @@ general:
     debug: off
     interferences: on
 
-
 nodes:
     count: 5
     implementations: