diff --git a/tdp/core/collections.py b/tdp/core/collections.py
index 9b0cd45e..75d733bf 100644
--- a/tdp/core/collections.py
+++ b/tdp/core/collections.py
@@ -199,7 +199,13 @@ def _init_operations(self):
 
     def get_services(self) -> set[str]:
         """Get the list of services names."""
-        return {operation.service_name for operation in self.operations.values()}
+        # Filters out the sleep operation service as it is not a real service.
+        operation_sleep_name = ServiceComponentName(OPERATION_SLEEP_NAME)
+        return {
+            operation.service_name
+            for operation in self.operations.values()
+            if operation.service_name != operation_sleep_name.service_name
+        }
 
     def get_default_vars_paths(self, service_name: str) -> Generator[Path, None, None]:
         """Get the default vars paths for a service."""