diff --git a/compile.c b/compile.c
index b18840c022..c7dd5cb281 100644
--- a/compile.c
+++ b/compile.c
@@ -288,7 +288,7 @@ struct iseq_compile_data_ensure_node_stack {
 	  rb_ary_push(branches, INT2FIX(last_line)); \
 	  rb_ary_push(branches, INT2FIX(last_column)); \
 	  rb_ary_push(branches, INT2FIX(counter_idx)); \
-	  ADD_INSN2((seq), (first_line), trace2, INT2FIX(RUBY_EVENT_COVERAGE), INT2FIX(counter_idx)); \
+	  ADD_INSN2((seq), (first_line), tracebranch, INT2FIX(RUBY_EVENT_COVERAGE), INT2FIX(counter_idx)); \
       } \
   } while (0)
 
diff --git a/insns.def b/insns.def
index 4a5f39732c..1c20573254 100644
--- a/insns.def
+++ b/insns.def
@@ -778,11 +778,11 @@ checkkeyword
 
 /**
   @c setting
-  @e trace
-  @j trace 用の命令。
+  @e trace a branch
+  @j 分岐を trace する
  */
 DEFINE_INSN
-trace2
+tracebranch
 (rb_num_t nf, VALUE data)
 ()
 ()