diff --git a/NEWS.md b/NEWS.md
index e9fb831a..3d8cdbdf 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -7,6 +7,7 @@ Red Panda C++ Version 1.1.0
   - enhancement: rename in files view's context menu
   - enhancement: delete in files view's context menu
   - change: drag&drop in files view default to move
+  - fix: rename macro doesn't work in project
 
 Red Panda C++ Version 1.0.10
   - fix: modify watch doesn't work
diff --git a/RedPandaIDE/mainwindow.cpp b/RedPandaIDE/mainwindow.cpp
index 3d1c8561..4d865a20 100644
--- a/RedPandaIDE/mainwindow.cpp
+++ b/RedPandaIDE/mainwindow.cpp
@@ -4175,7 +4175,6 @@ void MainWindow::onFileChanged(const QString &path)
     mFilesChangedNotifying.insert(path);
     Editor *e = mEditorList->getOpenedEditorByFilename(path);
     if (e) {
-        e->setModified(true);
         if (fileExists(path)) {
             e->activate();
             if (QMessageBox::question(this,tr("File Changed"),
@@ -4187,6 +4186,8 @@ void MainWindow::onFileChanged(const QString &path)
                 } catch(FileError e) {
                     QMessageBox::critical(this,tr("Error"),e.reason());
                 }
+            } else {
+                e->setModified(true);
             }
         } else {
             mFileSystemWatcher.removePath(path);
@@ -4197,7 +4198,6 @@ void MainWindow::onFileChanged(const QString &path)
                 mEditorList->closeEditor(e);
             } else {
                 e->setModified(true);
-                e->updateCaption();
             }
         }
     }
@@ -6317,11 +6317,11 @@ void MainWindow::on_actionRename_Symbol_triggered()
             coord.Char--;
             expression = editor->getExpressionAtPosition(coord);
         }
-        // Find it's definition
+            // Find it's definition
         PStatement oldStatement = editor->parser()->findStatementOf(
-                    editor->filename(),
-                    expression,
-                    oldCaretXY.Line);
+                        editor->filename(),
+                        expression,
+                        oldCaretXY.Line);
         // definition of the symbol not found
         if (!oldStatement)
             return;
diff --git a/RedPandaIDE/qsynedit/highlighter/cpp.cpp b/RedPandaIDE/qsynedit/highlighter/cpp.cpp
index 24fdfc43..edc3db53 100644
--- a/RedPandaIDE/qsynedit/highlighter/cpp.cpp
+++ b/RedPandaIDE/qsynedit/highlighter/cpp.cpp
@@ -451,32 +451,50 @@ void SynEditCppHighlighter::directiveProc()
         mRun+=1;
     }
     if (directive == "define") {
-        do {
-            switch(mLine[mRun].unicode()) {
-            case '/': //comment?
-                switch (mLine[mRun+1].unicode()) {
-                case '/': // is end of directive as well
-                    mRange.state = RangeState::rsUnknown;
-                    return;
-                case '*': // might be embeded only
-                    mRange.state = RangeState::rsDirectiveComment;
-                    return;
-                }
-                break;
-            case '\\': // yet another line?
-                if (mLine[mRun+1] == 0) {
-                    mRun+=1;
-                    mRange.state = RangeState::rsMultiLineDirective;
-                    return;
-                }
-                break;
-            }
-            mRun+=1;
-        } while (mLine[mRun]!=0);
+        while(mLine[mRun]!=0 && isSpaceChar(mLine[mRun]))
+            mRun++;
+        mRange.state = RangeState::rsDefineIdentifier;
+        return;
     } else
         mRange.state = RangeState::rsUnknown;
 }
 
+void SynEditCppHighlighter::defineIdentProc()
+{
+    mTokenId = TokenKind::Identifier;
+    while(mLine[mRun]!=0 && isIdentChar(mLine[mRun]))
+        mRun++;
+    mRange.state = RangeState::rsDefineRemaining;
+}
+
+void SynEditCppHighlighter::defineRemainingProc()
+{
+    mTokenId = TokenKind::Directive;
+    do {
+        switch(mLine[mRun].unicode()) {
+        case '/': //comment?
+            switch (mLine[mRun+1].unicode()) {
+            case '/': // is end of directive as well
+                mRange.state = RangeState::rsUnknown;
+                return;
+            case '*': // might be embeded only
+                mRange.state = RangeState::rsDirectiveComment;
+                return;
+            }
+            break;
+        case '\\': // yet another line?
+            if (mLine[mRun+1] == 0) {
+                mRun+=1;
+                mRange.state = RangeState::rsMultiLineDirective;
+                return;
+            }
+            break;
+        }
+        mRun+=1;
+    } while (mLine[mRun]!=0);
+    mRange.state=RangeState::rsUnknown;
+}
+
 void SynEditCppHighlighter::directiveEndProc()
 {
     mTokenId = TokenKind::Directive;
@@ -1518,6 +1536,12 @@ void SynEditCppHighlighter::next()
                 asciiCharProc();
             }
             break;
+        case RangeState::rsDefineIdentifier:
+            defineIdentProc();
+            break;
+        case RangeState::rsDefineRemaining:
+            defineRemainingProc();
+            break;
         default:
             mRange.state = RangeState::rsUnknown;
             if (mLine[mRun] == 'R' && mLine[mRun+1] == '"') {
diff --git a/RedPandaIDE/qsynedit/highlighter/cpp.h b/RedPandaIDE/qsynedit/highlighter/cpp.h
index aecc3c67..30bb97f4 100644
--- a/RedPandaIDE/qsynedit/highlighter/cpp.h
+++ b/RedPandaIDE/qsynedit/highlighter/cpp.h
@@ -62,7 +62,7 @@ class SynEditCppHighlighter: public SynHighlighter
         rsMultiLineString, rsMultiLineDirective, rsCppComment,
         rsStringEscapeSeq, rsMultiLineStringEscapeSeq,
         rsRawString, rsSpace,rsRawStringEscaping,rsRawStringNotEscaping,rsChar,
-        rsCppCommentEnded
+        rsCppCommentEnded, rsDefineStart, rsDefineIdentifier, rsDefineRemaining
     };
 
 public:
@@ -111,6 +111,8 @@ private:
     void colonProc();
     void commaProc();
     void directiveProc();
+    void defineIdentProc();
+    void defineRemainingProc();
     void directiveEndProc();
     void equalProc();
     void greaterProc();