diff --git a/src/math/exp10l.c b/src/math/exp10l.c
index 33abc8b5..4f9469ae 100644
--- a/src/math/exp10l.c
+++ b/src/math/exp10l.c
@@ -1,4 +1,5 @@
 #define _GNU_SOURCE
+#include <float.h>
 #include <math.h>
 #include "libc.h"