diff --git a/src/daemon.h b/src/daemon.h
index 971035c05..4dad7e18d 100644
--- a/src/daemon.h
+++ b/src/daemon.h
@@ -48,6 +48,7 @@ daemonize_finish(void)
 void
 daemonize_kill(void);
 #else
+#include <glib.h>
 static inline void
 daemonize_kill(void)
 { g_error("--kill is not available on WIN32"); }