diff --git a/src/os/unix/ngx_alloc.c b/src/os/unix/ngx_alloc.c
index 72cf4e4..25606e2 100644
--- a/src/os/unix/ngx_alloc.c
+++ b/src/os/unix/ngx_alloc.c
@@ -8,7 +8,8 @@
 #include <ngx_core.h>
 
 
-int ngx_pagesize;
+int         ngx_pagesize;
+ngx_uint_t  ngx_cacheline_size;
 
 
 void *