diff --git a/src/userprog/exception.c b/src/userprog/exception.c
index 1fcbe61..2e812ec 100644
--- a/src/userprog/exception.c
+++ b/src/userprog/exception.c
@@ -148,17 +148,18 @@ page_fault (struct intr_frame *f)
 
   if (user && not_present)
     {
-  	  if (try_alloc_new_page (fault_addr, f->esp))
+      if (try_alloc_new_page (fault_addr, f->esp))
         return;
     }
   else
     {
       if (try_alloc_new_page (fault_addr, thread_current ()->curr_esp))
         return;
-	  f->eip = (void *)f->eax;
+
+      f->eip = (void *)f->eax;
       f->eax = 0xffffffff;
       return;
-	}
+    }
 
   /* To implement virtual memory, delete the rest of the function
      body, and replace it with code that brings in the page to