diff --git a/include/osmocom/gsm/sysinfo.h b/include/osmocom/gsm/sysinfo.h
index e2fc09d..cb7e10d 100644
--- a/include/osmocom/gsm/sysinfo.h
+++ b/include/osmocom/gsm/sysinfo.h
@@ -1,5 +1,6 @@
 #pragma once
 
+#include <stdbool.h>
 #include <osmocom/core/utils.h>
 #include <osmocom/gsm/protocol/gsm_04_08.h>