1 files changed, 1 insertions, 1 deletions
diff --git a/thread.c b/thread.c
index 8d4b28312b..80f6f7825b 100644
--- a/thread.c
+++ b/thread.c
@@ -3181,7 +3181,7 @@ rb_thread_to_s(VALUE thread)
         rb_str_catf(str, "@%"PRIsVALUE, target_th->name);
     }
     if ((loc = threadptr_invoke_proc_location(target_th)) != Qnil) {
-        rb_str_catf(str, "@%"PRIsVALUE":%"PRIsVALUE,
+        rb_str_catf(str, " %"PRIsVALUE":%"PRIsVALUE,
                     RARRAY_AREF(loc, 0), RARRAY_AREF(loc, 1));
         rb_gc_force_recycle(loc);
     }