diff --git a/libclc/r600/lib/atomic/atomic.cl b/libclc/r600/lib/atomic/atomic.cl
index d38bf819f190..11864e668a55 100644
--- a/libclc/r600/lib/atomic/atomic.cl
+++ b/libclc/r600/lib/atomic/atomic.cl
@@ -22,6 +22,7 @@ ATOMIC_FUNC(atomic_add)
 ATOMIC_FUNC(atomic_and)
 ATOMIC_FUNC(atomic_or)
 ATOMIC_FUNC(atomic_sub)
+ATOMIC_FUNC(atomic_xor)
 
 _CLC_DECL signed int __clc_atomic_max_addr1(volatile global signed int*, signed int);
 _CLC_DECL signed int __clc_atomic_max_addr3(volatile local signed int*, signed int);