diff --git a/NEWS.md b/NEWS.md
index 9233d603..389df751 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -15,6 +15,7 @@ Red Panda C++ Version 2.12
   - fix: File is parsed before editor is fully created.
   - enhancement: New GAS File in the File Menu
   - change: rename "New File" to "New C/C++ File"    
+  - change: The default disassemble style of CPU Dialog is "AT&T" now.
 
 Red Panda C++ Version 2.11
 
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 4dc2c895..13da75e9 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -2044,7 +2044,7 @@ void MainWindow::runExecutable(RunType runType)
         QStringList binDirs = mProject->binDirs();
         QFileInfo execInfo(mProject->executable());
         QDateTime execModTime = execInfo.lastModified();
-        if (execInfo.exists() && mProject->unitsModifiedSince(execModTime)  &&
+        if (execInfo.exists() && mProject->modifiedSince(execModTime)  &&
                 QMessageBox::question(
                     this,
                     tr("Rebuild Project"),
@@ -2153,24 +2153,10 @@ void MainWindow::debug()
             }
             return;
         }
-        if (mProject->modified()  &&
-                QMessageBox::question(
-                    this,
-                    tr("Rebuild Project"),
-                    tr("Project has been modified, do you want to rebuild it?")
-                                                      ) == QMessageBox::Yes) {
-            mCompileSuccessionTask=std::make_shared<CompileSuccessionTask>();
-            mCompileSuccessionTask->type = CompileSuccessionTaskType::Debug;
-            mCompileSuccessionTask->execName = mProject->executable();
-            mCompileSuccessionTask->isExecutable = true;
-            mCompileSuccessionTask->binDirs = binDirs;
-            compile();
-            return;
-        }
         {
             QFileInfo execInfo(mProject->executable());
             QDateTime execModTime = execInfo.lastModified();
-            if (execInfo.exists() && mProject->unitsModifiedSince(execModTime)  &&
+            if (execInfo.exists() && mProject->modifiedSince(execModTime)  &&
                     QMessageBox::question(
                         this,
                         tr("Rebuild Project"),
diff --git a/RedPandaIDE/project.cpp b/RedPandaIDE/project.cpp
index 7ae3e3d2..5f52f0fc 100644
--- a/RedPandaIDE/project.cpp
+++ b/RedPandaIDE/project.cpp
@@ -188,7 +188,17 @@ bool Project::modified() const
 //            return true;
 //        }
 //    }
-//    return false;
+    //    return false;
+}
+
+bool Project::modifiedSince(const QDateTime &time)
+{
+    if (modified())
+        return true;
+    if (unitsModifiedSince(time))
+        return true;
+    QFileInfo info(filename());
+    return (info.lastModified()>time);
 }
 
 void Project::open()
diff --git a/RedPandaIDE/project.h b/RedPandaIDE/project.h
index 579de37f..c3571978 100644
--- a/RedPandaIDE/project.h
+++ b/RedPandaIDE/project.h
@@ -216,6 +216,7 @@ public:
     QString makeFileName();
     bool unitsModifiedSince(const QDateTime& time);
     bool modified() const;
+    bool modifiedSince(const QDateTime& time);
     void setFileName(QString value);
     void setModified(bool value);
 
diff --git a/RedPandaIDE/settings.cpp b/RedPandaIDE/settings.cpp
index 7ea9a806..7deafbe9 100644
--- a/RedPandaIDE/settings.cpp
+++ b/RedPandaIDE/settings.cpp
@@ -3983,7 +3983,7 @@ void Settings::Debugger::doLoad()
 #endif
     mOnlyShowMono = boolValue("only_show_mono",true);
     mFontSize = intValue("font_size",14);
-    mUseIntelStyle = boolValue("use_intel_style",true);
+    mUseIntelStyle = boolValue("use_intel_style",false);
     mBlendMode = boolValue("blend_mode",true);
     mSkipSystemLibraries = boolValue("skip_system_lib",true);
     mSkipProjectLibraries = boolValue("skip_project_lib",true);