Index: kernel/generic/src/mm/backend_phys.c
===================================================================
--- kernel/generic/src/mm/backend_phys.c	(revision ab6f25077f09eecbad05a5e320a8ce20373685db)
+++ kernel/generic/src/mm/backend_phys.c	(revision a0ce870840bae13124d349be1c51897d54caf223)
@@ -81,6 +81,7 @@
 	page_mapping_insert(AS, addr, base + (addr - area->base),
 	    as_area_get_flags(area));
-        if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
-                panic("Cannot insert used space.");
+	
+	if (!used_space_insert(area, ALIGN_DOWN(addr, PAGE_SIZE), 1))
+		panic("Cannot insert used space.");
 
 	return AS_PF_OK;