diff --git a/elf/cache.c b/elf/cache.c
index dde3d7f..fdfedb0 100644
--- a/elf/cache.c
+++ b/elf/cache.c
@@ -29,6 +29,7 @@
 #include <stdint.h>
 #include <sys/fcntl.h>
 #include <sys/mman.h>
+#include <sys/param.h>
 #include <sys/stat.h>
 #include <sys/types.h>