diff --git a/libavutil/eval.c b/libavutil/eval.c
index 4d8ebf4f6e..36b5ce5dda 100644
--- a/libavutil/eval.c
+++ b/libavutil/eval.c
@@ -29,6 +29,7 @@
 #include "avutil.h"
 #include "eval.h"
 #include "log.h"
+#include "mathematics.h"
 
 typedef struct Parser {
     const AVClass *class;
diff --git a/libavutil/opt.c b/libavutil/opt.c
index 9a3c0d47c7..b1e50f7a59 100644
--- a/libavutil/opt.c
+++ b/libavutil/opt.c
@@ -31,6 +31,7 @@
 #include "eval.h"
 #include "dict.h"
 #include "log.h"
+#include "mathematics.h"
 
 #if FF_API_FIND_OPT
 //FIXME order them and do a bin search