diff --git a/ChangeLog b/ChangeLog
index 5af9c04ce..32c3b0d7a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2014-07-07  Yunqiang Su  <wzssyqa@gmail.com>  (tiny change)
+
+	* config/config.trampoline.c:
+	* Source/NSObject.m (GSAtomicIncrement, GSAtomicDecrement):
+	Use __mips64 to distinguish MIPS64.
+
 2014-06-30  Yavor Doganov  <yavor@gnu.org>
 
 	* Tools/GNUmakefile (CONFIG_SYSTEM_LIBS):
diff --git a/Source/NSObject.m b/Source/NSObject.m
index 0a3c09699..cdfc7352b 100644
--- a/Source/NSObject.m
+++ b/Source/NSObject.m
@@ -337,7 +337,7 @@ GSAtomicIncrement(gsatomic_t X)
   int tmp;
 
   __asm__ __volatile__ (
-#if !defined(__mips64__)
+#if !defined(__mips64)
     "   .set  mips2  \n"
 #endif
     "0: ll    %0, %1 \n"
@@ -354,7 +354,7 @@ GSAtomicDecrement(gsatomic_t X)
   int tmp;
 
   __asm__ __volatile__ (
-#if !defined(__mips64__)
+#if !defined(__mips64)
     "   .set  mips2  \n"
 #endif
     "0: ll    %0, %1 \n"
diff --git a/config/config.trampoline.c b/config/config.trampoline.c
index 47d151fa7..593dde0dc 100644
--- a/config/config.trampoline.c
+++ b/config/config.trampoline.c
@@ -42,7 +42,7 @@ register void* env __asm__("a0");
 #ifdef __mips__
 register void* env __asm__("$2");
 #endif
-#ifdef __mips64__
+#ifdef __mips64
 register void* env __asm__("$2");
 #endif
 #if defined(__sparc__) && !defined(__sparc64__)