diff --git a/src/modules/module-bt-device.c b/src/modules/module-bt-device.c
index 3a756847b..8769d1842 100644
--- a/src/modules/module-bt-device.c
+++ b/src/modules/module-bt-device.c
@@ -30,6 +30,7 @@
 #include <pulse/xmalloc.h>
 #include <pulse/timeval.h>
 #include <pulse/sample.h>
+#include <pulsecore/core-util.h>
 #include <pulsecore/core-error.h>
 #include <pulsecore/module.h>
 #include <pulsecore/modargs.h>