diff --git a/glib/deprecated/gthread-deprecated.c b/glib/deprecated/gthread-deprecated.c
index 096ffcb28..2b322d6a7 100644
--- a/glib/deprecated/gthread-deprecated.c
+++ b/glib/deprecated/gthread-deprecated.c
@@ -30,6 +30,8 @@
 #include "gthreadprivate.h"
 #include "deprecated/gthread.h"
 
+#include "gutils.h"
+
 /* {{{1 Documentation */
 
 /**