--- a/third_party/fontconfig/include/config.h
+++ b/third_party/fontconfig/include/config.h
@@ -157,7 +157,7 @@
 #define HAVE_RANDOM 1
 
 /* Define to 1 if you have the `random_r' function. */
-#define HAVE_RANDOM_R 1
+#define HAVE_RANDOM_R 0
 
 /* Define to 1 if you have the `rand_r' function. */
 #define HAVE_RAND_R 1