diff --git a/libavcodec/cbrt_data.c b/libavcodec/cbrt_data.c
index f5d9778a6f..d2e36cd6dd 100644
--- a/libavcodec/cbrt_data.c
+++ b/libavcodec/cbrt_data.c
@@ -21,6 +21,8 @@
 #include "config.h"
 #include "cbrt_data.h"
 
+#include "libavutil/libm.h"
+
 #if CONFIG_HARDCODED_TABLES
 #include "libavcodec/cbrt_tables.h"
 #else