diff --git a/nix-meson-build-support/common/meson.build b/nix-meson-build-support/common/meson.build
index 5fcf557e7..4488a1760 100644
--- a/nix-meson-build-support/common/meson.build
+++ b/nix-meson-build-support/common/meson.build
@@ -25,6 +25,7 @@ add_project_arguments(
   '-Wignored-qualifiers',
   '-Wimplicit-fallthrough',
   '-Wno-deprecated-declarations',
+  '-Wno-interference-size', # Used for C++ ABI only. We don't provide any guarantees about different march tunings.
   language : 'cpp',
 )
 
diff --git a/src/libexpr/eval.cc b/src/libexpr/eval.cc
index 84f14198f..d9d8a986a 100644
--- a/src/libexpr/eval.cc
+++ b/src/libexpr/eval.cc
@@ -318,7 +318,6 @@ EvalState::EvalState(
     countCalls = getEnv("NIX_COUNT_CALLS").value_or("0") != "0";
 
     static_assert(sizeof(Env) <= 16, "environment must be <= 16 bytes");
-    static_assert(sizeof(Counter) == 64, "counters must be 64 bytes");
 
     /* Construct the Nix expression search path. */
     assert(lookupPath.elements.empty());
diff --git a/src/libexpr/include/nix/expr/counter.hh b/src/libexpr/include/nix/expr/counter.hh
index efbf23de3..f679b23ca 100644
--- a/src/libexpr/include/nix/expr/counter.hh
+++ b/src/libexpr/include/nix/expr/counter.hh
@@ -11,7 +11,7 @@ namespace nix {
  * variable is set. This is to prevent contention on these counters
  * when multi-threaded evaluation is enabled.
  */
-struct alignas(64) Counter
+struct alignas(std::hardware_destructive_interference_size) Counter
 {
     using value_type = uint64_t;