diff --git a/src/kernel/qpixmapcache.cpp b/src/kernel/qpixmapcache.cpp
index c2e7d9b..b2d42b5 100644
--- a/src/kernel/qpixmapcache.cpp
+++ b/src/kernel/qpixmapcache.cpp
@@ -122,7 +122,9 @@ void cleanup_pixmap_cache();
 
 #ifdef THROW_AWAY_UNUSED_PAGES
 # include <sys/mman.h> // madvise
+# define __KERNEL__
 # include <asm/page.h> // PAGE_SIZE,PAGE_MASK,PAGE_ALIGN
+# undef __KERNEL__
 # ifndef PAGE_ALIGN
 # define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
 # endif // PAGE_ALIGN