diff --git a/source/src/ports/WIN32/sample_application/sampleapplication.c b/source/src/ports/WIN32/sample_application/sampleapplication.c
index 63e346eff..91f970177 100644
--- a/source/src/ports/WIN32/sample_application/sampleapplication.c
+++ b/source/src/ports/WIN32/sample_application/sampleapplication.c
@@ -9,6 +9,7 @@
 
 #include "trace.h"
 #include "opener_api.h"
+#include "appcontype.h"
 #include "ciptcpipinterface.h"
 #include "cipqos.h"
 #include "nvdata.h"