diff --git a/lib/msun/src/s_cbrt.c b/lib/msun/src/s_cbrt.c
index 30ffe5f294a2..0e609e110d9a 100644
--- a/lib/msun/src/s_cbrt.c
+++ b/lib/msun/src/s_cbrt.c
@@ -15,6 +15,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <float.h>
 #include "math.h"
 #include "math_private.h"
 
diff --git a/lib/msun/src/s_cproj.c b/lib/msun/src/s_cproj.c
index 220b4c83fe31..38e774723e86 100644
--- a/lib/msun/src/s_cproj.c
+++ b/lib/msun/src/s_cproj.c
@@ -30,6 +30,7 @@
 __FBSDID("$FreeBSD$");
 
 #include <complex.h>
+#include <float.h>
 #include <math.h>
 
 #include "math_private.h"
diff --git a/lib/msun/src/s_erf.c b/lib/msun/src/s_erf.c
index e1d63bca8197..5f228474f422 100644
--- a/lib/msun/src/s_erf.c
+++ b/lib/msun/src/s_erf.c
@@ -107,7 +107,7 @@ __FBSDID("$FreeBSD$");
  *	   	erfc/erf(NaN) is NaN
  */
 
-
+#include <float.h>
 #include "math.h"
 #include "math_private.h"