diff --git a/gc.c b/gc.c
index 9c6865686f..f64909006c 100644
--- a/gc.c
+++ b/gc.c
@@ -1202,7 +1202,7 @@ heap_extend_pages(rb_objspace_t *objspace)
     }
 
     return next_used_limit - used;
-    }
+}
 
 static void
 heap_set_increment(rb_objspace_t *objspace, size_t additional_pages)