diff --git a/src/mainloop-glib.c b/src/mainloop-glib.c
index acf1989dd..7addd7d3d 100644
--- a/src/mainloop-glib.c
+++ b/src/mainloop-glib.c
@@ -19,6 +19,8 @@
 
 #include <errno.h>
 
+#include <spa/utils/result.h>
+
 #include <pipewire/log.h>
 #include <pipewire/loop.h>