diff --git a/Python/ceval.c b/Python/ceval.c
index 09f939e..3bd0ce6 100644
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -868,7 +868,7 @@
 
 #define DISPATCH() \
 	{ \
-		if (!eval_breaker) { \
+            if (!_Py_atomic_load_relaxed(&eval_breaker)) {      \
 			FAST_DISPATCH(); \
 		} \
 		continue; \