diff --git a/brickllm/compiled_graphs.py b/brickllm/compiled_graphs.py
index cd72b58..280f8e4 100644
--- a/brickllm/compiled_graphs.py
+++ b/brickllm/compiled_graphs.py
@@ -1,3 +1,3 @@
 from .graphs import BrickSchemaGraph
 
-brickschema_graph = BrickSchemaGraph().compile()
\ No newline at end of file
+brickschema_graph = BrickSchemaGraph()._compiled_graph()
\ No newline at end of file
diff --git a/brickllm/graphs/brickschema_graph.py b/brickllm/graphs/brickschema_graph.py
index 9bef294..a9f9b92 100644
--- a/brickllm/graphs/brickschema_graph.py
+++ b/brickllm/graphs/brickschema_graph.py
@@ -36,15 +36,20 @@ def __init__(self):
         self.workflow.add_edge("get_relationships", "get_sensors")
         self.workflow.add_edge("get_sensors", END)
         
-        # Initialize the compiled graph
-        self.graph = None
+        # Compile graph
+        try:
+            self.graph = self.workflow.compile()
+        except Exception as e:
+            raise ValueError(f"Failed to compile the graph: {e}")
         
         # Hardcoding the thread_id for now
         self.config = {"configurable": {"thread_id": "1"}}
 
-    def compile(self):
-        """Compile the workflow and update the compiled graph."""
-        self.graph = self.workflow.compile()
+    def _compiled_graph(self):
+        """Check if the graph is compiled and return the compiled graph."""
+        if self.graph is None:
+            raise ValueError("Graph is not compiled yet. Please compile the graph first.")
+        return self.graph
 
     def display(self, filename="graph.png"):
         """Display the compiled graph as an image.
diff --git a/examples/brickschema_ttl.py b/examples/brickschema_ttl.py
index 97ec173..e0948be 100644
--- a/examples/brickschema_ttl.py
+++ b/examples/brickschema_ttl.py
@@ -2,7 +2,6 @@
 
 # Create an instance of BrickSchemaGraph
 brick_graph = BrickSchemaGraph()
-brick_graph.compile()
 
 # Specify the user prompt
 building_description = """