diff --git a/src/test/csrc/difftest.cpp b/src/test/csrc/difftest.cpp
index a6717d3ea95229b0074a2cbd2ce2149373eead86..5390c2bdff5b9adde1f868ff9c062404c33e773c 100644
--- a/src/test/csrc/difftest.cpp
+++ b/src/test/csrc/difftest.cpp
@@ -44,9 +44,7 @@ static int wb_pointer[NumCore] = {0};
 
 void init_difftest() {
 
-  if (ref_misc_put_gmaddr) {
-    ref_misc_put_gmaddr(pmem);
-  }
+  ref_misc_put_gmaddr(pmem);
   
   for (int i = 0; i < NumCore; i++) {
     ref_difftest_init(i);
diff --git a/src/test/csrc/nemuproxy.cpp b/src/test/csrc/nemuproxy.cpp
index f5b00b71a6576f14e075d224b05bdd15b0b94e9f..71ab85e9955896fca15c92fb43b0fe00d5d8415b 100644
--- a/src/test/csrc/nemuproxy.cpp
+++ b/src/test/csrc/nemuproxy.cpp
@@ -1,4 +1,3 @@
-#define _GNU_SOURCE
 #include <nemuproxy.h>
 #include <unistd.h>
 #include <dlfcn.h>