--- a/mono/utils/mono-state.c
+++ b/mono/utils/mono-state.c
@@ -33,7 +33,7 @@
 #endif
 
 #include <sys/param.h>
-#include <sys/sysctl.h>
+#include <linux/sysctl.h>
 #include <fcntl.h>
 
 typedef struct {