diff --git a/math/spot/files/patch-spot_misc_tmpfile.cc b/math/spot/files/patch-spot_misc_tmpfile.cc
new file mode 100644
index 000000000000..f3705f682eeb
--- /dev/null
+++ b/math/spot/files/patch-spot_misc_tmpfile.cc
@@ -0,0 +1,10 @@
+--- spot/misc/tmpfile.cc.orig	2018-10-04 12:40:02 UTC
++++ spot/misc/tmpfile.cc
+@@ -23,6 +23,7 @@
+ #include <cstdlib>
+ #include <unistd.h>
+ #include <string.h>
++#include <stdlib.h>
+ 
+ namespace spot
+ {