1 files changed, 1 insertions, 0 deletions
diff --git a/Alc/ALu.c b/Alc/ALu.c
index a4e9c1a4..bd1bf79a 100644
--- a/Alc/ALu.c
+++ b/Alc/ALu.c
@@ -34,6 +34,7 @@
 #include "alu.h"
 #include "bs2b.h"
 #include "hrtf.h"
+#include "mastering.h"
 #include "uhjfilter.h"
 #include "bformatdec.h"
 #include "static_assert.h"