diff --git a/libc/include/limits.h b/libc/include/limits.h
index 1de8ea611..d691a8f01 100644
--- a/libc/include/limits.h
+++ b/libc/include/limits.h
@@ -90,6 +90,7 @@
 #endif
 
 #ifndef PAGESIZE
+#include <asm/page.h>
 #define  PAGESIZE  PAGE_SIZE
 #endif