diff --git a/libavcodec/iirfilter-test.c b/libavcodec/iirfilter-test.c
index 139a35d505..5aa156cb90 100644
--- a/libavcodec/iirfilter-test.c
+++ b/libavcodec/iirfilter-test.c
@@ -20,6 +20,8 @@
 #include <stdint.h>
 #include <stdio.h>
 
+#include "libavutil/libm.h"
+
 #include "iirfilter.h"
 
 #define FILT_ORDER 4
diff --git a/libavutil/eval-test.c b/libavutil/eval-test.c
index da8721de7c..3551f17b20 100644
--- a/libavutil/eval-test.c
+++ b/libavutil/eval-test.c
@@ -20,6 +20,7 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "libm.h"
 #include "timer.h"
 #include "eval.h"