diff --git a/regressions/ck_stack/benchmark/latency.c b/regressions/ck_stack/benchmark/latency.c
index a871ae3..ac17c8a 100644
--- a/regressions/ck_stack/benchmark/latency.c
+++ b/regressions/ck_stack/benchmark/latency.c
@@ -45,7 +45,7 @@
  * some irrelevant GCC warnings.
  */
 
-static ck_stack_t stack;
+static ck_stack_t stack CK_CC_CACHELINE;
 
 int
 main(void)