diff --git a/SCsub b/SCsub
index c8d3504..420a8b4 100644
--- a/SCsub
+++ b/SCsub
@@ -29,4 +29,5 @@ if 'TOOLS_ENABLED' in env["CPPDEFINES"]:
 
 module_env.add_source_files(env.modules_sources,"nodes/mesh_data_instance.cpp")
 
-module_env.add_source_files(env.modules_sources,"props/prop_data_mesh_data.cpp")
+if os.path.isdir('../props'):
+    module_env.add_source_files(env.modules_sources,"props/prop_data_mesh_data.cpp")