1 files changed, 2 insertions, 1 deletions
diff --git a/signal.c b/signal.c
index 6d711fc30d..42edc9071b 100644
--- a/signal.c
+++ b/signal.c
@@ -45,6 +45,7 @@
 #include "ruby_atomic.h"
 #include "vm_core.h"
 #include "ractor_core.h"
+#include "ruby/internal/attr/nonstring.h"
 
 #ifdef NEED_RUBY_ATOMIC_OPS
 rb_atomic_t
@@ -976,7 +977,7 @@ check_reserved_signal_(const char *name, size_t name_len, int signo)
     if (prev) {
         ssize_t RB_UNUSED_VAR(err);
         static const int stderr_fd = 2;
-#define NOZ(name, str) name[sizeof(str)-1] = str
+#define NOZ(name, str) RBIMPL_ATTR_NONSTRING() name[sizeof(str)-1] = str
         static const char NOZ(msg1, " received in ");
         static const char NOZ(msg2, " handler\n");