diff --git a/IDE/src/ui/GoToLineDialog.bf b/IDE/src/ui/GoToLineDialog.bf
index 3aa2221d..7970d67c 100644
--- a/IDE/src/ui/GoToLineDialog.bf
+++ b/IDE/src/ui/GoToLineDialog.bf
@@ -15,6 +15,8 @@ namespace IDE.ui
         SourceViewPanel mSourceViewPanel;
         int mCursorPos;
         double mVertPos;
+		bool mIsValid = true;
+		EditWidget mEditWidget;
 
         public this(String title = null, String text = null, Image icon = null) :
             base(title, text, icon)
@@ -35,14 +37,16 @@ namespace IDE.ui
 
             mDefaultButton = AddButton("OK", new (evt) => GotoLineSubmit(true));
             mEscButton = AddButton("Cancel", new (evt) => Cancel());
-            var editWidget = AddEdit(StackStringFormat!("{0}", line + 1));
-            editWidget.mOnContentChanged.Add(new (evt) => GotoLineSubmit(false));
+            mEditWidget = AddEdit(StackStringFormat!("{0}", line + 1));
+            mEditWidget.mOnContentChanged.Add(new (evt) => GotoLineSubmit(false));
         }
 
         void GotoLineSubmit(bool isFinal)
         {
             var editWidgetContent = mSourceViewPanel.mEditWidget;
 
+			mIsValid = false;
+
 			var text = scope String();
 			mDialogEditWidget.GetText(text);
 			var lineResult = int32.Parse(text);
@@ -52,10 +56,12 @@ namespace IDE.ui
                 line--;
                 if ((line < 0) || (line >= editWidgetContent.Content.GetLineCount()))
                 {
-                    IDEApp.Beep(IDEApp.MessageBeepType.Error);
+					if (isFinal)
+                    	IDEApp.Beep(IDEApp.MessageBeepType.Error);
                     return;
                 }
-                
+
+				mIsValid = true;
                 int column = ((SourceEditWidgetContent)editWidgetContent.Content).GetLineEndColumn(line, false, true, true);
                 editWidgetContent.Content.CursorLineAndColumn = EditWidgetContent.LineAndColumn(line, column);
                 editWidgetContent.Content.CursorMoved();
@@ -74,8 +80,23 @@ namespace IDE.ui
                     editWidgetContent.Content.mSelection = EditSelection(lineStart, lineEnd + 1);
                 }
             }
+			else
+			{
+				if (isFinal)
+					IDEApp.Beep(IDEApp.MessageBeepType.Error);
+			}
         }
 
+		public override void DrawAll(Graphics g)
+		{
+			base.DrawAll(g);
+			if (!mIsValid)
+			{
+				using (g.PushColor(0xFFFF0000))
+					g.DrawBox(DarkTheme.sDarkTheme.GetImage(DarkTheme.ImageIdx.Outline), mEditWidget.mX, mEditWidget.mY, mEditWidget.mWidth, mEditWidget.mHeight);
+			}
+		}
+
         void Cancel()
         {
             var editWidgetContent = mSourceViewPanel.mEditWidget;