diff --git a/sdcard/sdcard.c b/sdcard/sdcard.c
index 893c0dc..5b657bb 100644
--- a/sdcard/sdcard.c
+++ b/sdcard/sdcard.c
@@ -264,7 +264,7 @@
      * buffer at the same time.  This allows us to share the underlying storage. */
     union {
         __u8 request_buffer[MAX_REQUEST_SIZE];
-        __u8 read_buffer[MAX_READ + PAGESIZE];
+        __u8 read_buffer[MAX_READ + PAGE_SIZE];
     };
 };
 
@@ -1282,7 +1282,7 @@
     __u32 size = req->size;
     __u64 offset = req->offset;
     int res;
-    __u8 *read_buffer = (__u8 *) ((uintptr_t)(handler->read_buffer + PAGESIZE) & ~((uintptr_t)PAGESIZE-1));
+    __u8 *read_buffer = (__u8 *) ((uintptr_t)(handler->read_buffer + PAGE_SIZE) & ~((uintptr_t)PAGE_SIZE-1));
 
     /* Don't access any other fields of hdr or req beyond this point, the read buffer
      * overlaps the request buffer and will clobber data in the request.  This
@@ -1308,7 +1308,7 @@
     struct fuse_write_out out;
     struct handle *h = id_to_ptr(req->fh);
     int res;
-    __u8 aligned_buffer[req->size] __attribute__((__aligned__(PAGESIZE)));
+    __u8 aligned_buffer[req->size] __attribute__((__aligned__(PAGE_SIZE)));
 
     if (req->flags & O_DIRECT) {
         memcpy(aligned_buffer, buffer, req->size);