diff --git a/repos/dde_linux/src/include/lx_emul/shadow/arch/arm/include/asm/pgtable.h b/repos/dde_linux/src/include/lx_emul/shadow/arch/arm/include/asm/pgtable.h
index ad6689b95f..aa21f7eb39 100644
--- a/repos/dde_linux/src/include/lx_emul/shadow/arch/arm/include/asm/pgtable.h
+++ b/repos/dde_linux/src/include/lx_emul/shadow/arch/arm/include/asm/pgtable.h
@@ -18,7 +18,8 @@
 #include <asm/proc-fns.h>
 #include <asm-generic/pgtable-nopud.h>
 #include <asm-generic/pgtable_uffd.h>
-#include <asm/pgtable-nommu.h>
+
+#define PGDIR_SHIFT 21
 
 #ifndef __ASSEMBLY__