diff --git a/src/hb-cff-interp-dict-common.hh b/src/hb-cff-interp-dict-common.hh
index 62c87e94a..ace91bea4 100644
--- a/src/hb-cff-interp-dict-common.hh
+++ b/src/hb-cff-interp-dict-common.hh
@@ -28,6 +28,7 @@
 
 #include "hb-cff-interp-common.hh"
 #include <math.h>
+#include <float.h>
 
 namespace CFF {