diff --git a/example-clients/netmaster.c b/example-clients/netmaster.c
index aed9a2fb..ff200ee4 100644
--- a/example-clients/netmaster.c
+++ b/example-clients/netmaster.c
@@ -17,6 +17,7 @@
 */
 
 #include <stdlib.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <errno.h>
 #ifndef WIN32