diff --git a/lib/fixedpoint/fixedpoint.c b/lib/fixedpoint/fixedpoint.c
index 4530857df0..645419d102 100644
--- a/lib/fixedpoint/fixedpoint.c
+++ b/lib/fixedpoint/fixedpoint.c
@@ -24,6 +24,7 @@
 #include <stdlib.h>
 #include <stdbool.h>
 #include <inttypes.h>
+#include <limits.h>
 
 #define ULONG_BITS (sizeof (unsigned long)*CHAR_BIT)