diff --git a/nemu/src/memory/paddr.c b/nemu/src/memory/paddr.c
index 98c5ffd..ea1cd87 100644
--- a/nemu/src/memory/paddr.c
+++ b/nemu/src/memory/paddr.c
@@ -51,16 +51,16 @@ void init_mem() {
 }
 
 word_t paddr_read(paddr_t addr, int len) {
+  IFDEF(CONFIG_MTRACE, Log("R " FMT_WORD "%d\n", addr, len));
   if (likely(in_pmem(addr))) return pmem_read(addr, len);
   IFDEF(CONFIG_DEVICE, return mmio_read(addr, len));
-  IFDEF(CONFIG_MTRACE, Log("R " FMT_WORD "%d\n", addr, len));
   out_of_bound(addr);
   return 0;
 }
 
 void paddr_write(paddr_t addr, int len, word_t data) {
+  IFDEF(CONFIG_MTRACE, Log("W " FMT_WORD "%d D" FMT_WORD "\n", addr, len, data));
   if (likely(in_pmem(addr))) { pmem_write(addr, len, data); return; }
   IFDEF(CONFIG_DEVICE, mmio_write(addr, len, data); return);
-  IFDEF(CONFIG_MTRACE, Log("W " FMT_WORD "%d D" FMT_WORD "\n", addr, len, data));
   out_of_bound(addr);
 }