diff --git a/src/xswiftbus/utils.cpp b/src/xswiftbus/utils.cpp
index 4ad794df3..94b0efdf4 100644
--- a/src/xswiftbus/utils.cpp
+++ b/src/xswiftbus/utils.cpp
@@ -16,6 +16,7 @@
 #include "utils.h"
 #include <XPMPMultiplayerCSL.h>
 #include <XPLM/XPLMUtilities.h>
+#include <XPLM/XPLMPlugin.h>
 #include <string>
 #include <sstream>