1 files changed, 2 insertions, 1 deletions
diff --git a/signal.c b/signal.c
index 8f251befb8..2e9f4f5aff 100644
--- a/signal.c
+++ b/signal.c
@@ -19,7 +19,8 @@
 #include "atomic.h"
 
 #if !defined(_WIN32) && !defined(HAVE_GCC_ATOMIC_BUILTINS)
-rb_atomic_t ruby_atomic_exchange(rb_atomic_t *ptr, rb_atomic_t val)
+rb_atomic_t
+ruby_atomic_exchange(rb_atomic_t *ptr, rb_atomic_t val)
 {
     rb_atomic_t old = *ptr;
     *ptr = val;