diff --git a/libs/freetdm/src/testsangomaboost.c b/libs/freetdm/src/testsangomaboost.c
index ed2a7bd39d..b254a08bb8 100644
--- a/libs/freetdm/src/testsangomaboost.c
+++ b/libs/freetdm/src/testsangomaboost.c
@@ -53,6 +53,7 @@
 #endif
 #ifndef WIN32
 #include <unistd.h>
+#endif
 #include "freetdm.h"