diff --git a/include/dap_server_python.h b/include/dap_server_python.h
index 420b4b0041a62ac538abc187f68f85bf7feeaefd..d208b5a033572a4bfdad713110fc1a22e8abd2fb 100644
--- a/include/dap_server_python.h
+++ b/include/dap_server_python.h
@@ -1,3 +1,5 @@
+#ifndef _DAP_SERVER_PYTHON_
+#define _DAP_SERVER_PYTHON_
 #include "Python.h"
 #include "dap_server.h"
 
@@ -37,3 +39,4 @@ static PyTypeObject dapServer_dapServerType = {
 #ifdef __cplusplus
 }
 #endif
+#endif //_DAP_SERVER_PYTHON_