diff --git a/service.h b/service.h
index d66cbf2..f66076b 100644
--- a/service.h
+++ b/service.h
@@ -19,6 +19,8 @@
  *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include <stdbool.h>
+
 int MyStartService();
 int MyStopService();
 int MyReStartService();