diff --git a/src/hb-atomic-private.hh b/src/hb-atomic-private.hh
index 3239193..0e7a841 100644
--- a/src/hb-atomic-private.hh
+++ b/src/hb-atomic-private.hh
@@ -161,13 +161,13 @@
 
 #include <builtins.h>
 
-static inline int _hb_fetch_and_add(volatile int* AI, unsigned int V) {
+static inline int _hb_fetch_and_add (int* AI, unsigned int V) {
   __lwsync();
   int result = __fetch_and_add(AI, V);
   __lwsync();
   return result;
 }
-static inline int _hb_compare_and_swaplp(volatile long* P, long O, long N) {
+static inline int _hb_compare_and_swaplp (long* P, long O, long N) {
   __lwsync();
   int result = __compare_and_swaplp (P, &O, N);
   __lwsync();