1 files changed, 1 insertions, 1 deletions
diff --git a/thread.c b/thread.c
index 37eb858d23..e2741fdd6f 100644
--- a/thread.c
+++ b/thread.c
@@ -106,7 +106,7 @@ static inline void blocking_region_end(rb_thread_t *th, struct rb_blocking_regio
 
 #ifdef __ia64
 #define RB_GC_SAVE_MACHINE_REGISTER_STACK(th)          \
-    do{(th)->machine_register_stack_end = rb_ia64_bsp()}while(0)
+    do{(th)->machine_register_stack_end = rb_ia64_bsp();}while(0)
 #else
 #define RB_GC_SAVE_MACHINE_REGISTER_STACK(th)
 #endif