diff --git a/lib/src/atomic.h b/lib/src/atomic.h
index d91c2c0b..9e9269cc 100644
--- a/lib/src/atomic.h
+++ b/lib/src/atomic.h
@@ -48,7 +48,7 @@ static inline size_t atomic_load(const volatile size_t *p) {
 
 static inline uint32_t atomic_inc(volatile uint32_t *p) {
   #ifdef __ATOMIC_RELAXED
-    return __atomic_add_fetch(p, 1U, __ATOMIC_RELAXED);
+    return __atomic_add_fetch(p, 1U, __ATOMIC_SEQ_CST);
   #else
     return __sync_add_and_fetch(p, 1U);
   #endif
@@ -56,7 +56,7 @@ static inline uint32_t atomic_inc(volatile uint32_t *p) {
 
 static inline uint32_t atomic_dec(volatile uint32_t *p) {
   #ifdef __ATOMIC_RELAXED
-    return __atomic_sub_fetch(p, 1U, __ATOMIC_RELAXED);
+    return __atomic_sub_fetch(p, 1U, __ATOMIC_SEQ_CST);
   #else
     return __sync_sub_and_fetch(p, 1U);
   #endif