diff --git a/libgo/go/sync/atomic/atomic.c b/libgo/go/sync/atomic/atomic.c
index 25e439d..90a4ff3 100644
--- a/libgo/go/sync/atomic/atomic.c
+++ b/libgo/go/sync/atomic/atomic.c
@@ -69,7 +69,7 @@
 _Bool
 CompareAndSwapInt32 (int32_t *val, int32_t old, int32_t new)
 {
-  return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
+  return __atomic_compare_exchange_n (val, &old, new, false, __ATOMIC_SEQ_CST,
 				      __ATOMIC_RELAXED);
 }
 
@@ -82,7 +82,7 @@
 {
   if (((uintptr_t) val & 7) != 0)
     val = NULL;
-  return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
+  return __atomic_compare_exchange_n (val, &old, new, false, __ATOMIC_SEQ_CST,
 				      __ATOMIC_RELAXED);
 }
 
@@ -93,7 +93,7 @@
 _Bool
 CompareAndSwapUint32 (uint32_t *val, uint32_t old, uint32_t new)
 {
-  return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
+  return __atomic_compare_exchange_n (val, &old, new, false, __ATOMIC_SEQ_CST,
 				      __ATOMIC_RELAXED);
 }
 
@@ -106,7 +106,7 @@
 {
   if (((uintptr_t) val & 7) != 0)
     val = NULL;
-  return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
+  return __atomic_compare_exchange_n (val, &old, new, false, __ATOMIC_SEQ_CST,
 				      __ATOMIC_RELAXED);
 }
 
@@ -117,7 +117,7 @@
 _Bool
 CompareAndSwapUintptr (uintptr_t *val, uintptr_t old, uintptr_t new)
 {
-  return __atomic_compare_exchange_n (val, &old, new, true, __ATOMIC_SEQ_CST,
+  return __atomic_compare_exchange_n (val, &old, new, false, __ATOMIC_SEQ_CST,
 				      __ATOMIC_RELAXED);
 }