diff --git a/mrbgems/mruby-bin-debugger/tools/mrdb/cmdbreak.c b/mrbgems/mruby-bin-debugger/tools/mrdb/cmdbreak.c
index 151c403b6..7dff7e2b2 100644
--- a/mrbgems/mruby-bin-debugger/tools/mrdb/cmdbreak.c
+++ b/mrbgems/mruby-bin-debugger/tools/mrdb/cmdbreak.c
@@ -397,40 +397,30 @@ dbgcmd_info_break(mrb_state *mrb, mrdb_state *mrdb)
   return DBGST_PROMPT;
 }
 
+static dbgcmd_state
+dbgcmd_set_breakpoint(mrb_state *mrb, mrdb_state *mrdb,
+                      all_command_func all_func, select_command_func select_func)
+{
+  if (!exe_set_command_all(mrb, mrdb, all_func)) {
+    exe_set_command_select(mrb, mrdb, select_func);
+  }
+  return DBGST_PROMPT;
+}
+
 dbgcmd_state
 dbgcmd_delete(mrb_state *mrb, mrdb_state *mrdb)
 {
-  mrb_bool ret = FALSE;
-
-  ret = exe_set_command_all(mrb, mrdb, mrb_debug_delete_break_all);
-  if (ret != TRUE) {
-    exe_set_command_select(mrb, mrdb, mrb_debug_delete_break);
-  }
-
-  return DBGST_PROMPT;
+  return dbgcmd_set_breakpoint(mrb, mrdb, mrb_debug_delete_break_all, mrb_debug_delete_break);
 }
 
 dbgcmd_state
 dbgcmd_enable(mrb_state *mrb, mrdb_state *mrdb)
 {
-  mrb_bool ret = FALSE;
-
-  ret = exe_set_command_all(mrb, mrdb, mrb_debug_enable_break_all);
-  if (ret != TRUE) {
-    exe_set_command_select(mrb, mrdb, mrb_debug_enable_break);
-  }
-
-  return DBGST_PROMPT;
+  return dbgcmd_set_breakpoint(mrb, mrdb, mrb_debug_enable_break_all, mrb_debug_enable_break);
 }
 
 dbgcmd_state
 dbgcmd_disable(mrb_state *mrb, mrdb_state *mrdb)
 {
-  mrb_bool ret = FALSE;
-
-  ret = exe_set_command_all(mrb, mrdb, mrb_debug_disable_break_all);
-  if (ret != TRUE) {
-    exe_set_command_select(mrb, mrdb, mrb_debug_disable_break);
-  }
-  return DBGST_PROMPT;
+  return dbgcmd_set_breakpoint(mrb, mrdb, mrb_debug_disable_break_all, mrb_debug_disable_break);
 }