diff --git a/codeEditor.py b/codeEditor.py
index 390b61b..e815be5 100644
--- a/codeEditor.py
+++ b/codeEditor.py
@@ -223,7 +223,7 @@ def lineNumberAreaPaintEvent(self, event):
 
         while block.isValid() and top <= event.rect().bottom():
             if block.isVisible() and bottom >= event.rect().top():
-                number = str(block_number)
+                number = str(block_number+1)
                 painter.setPen(DARK_BLUE)
                 width = self.line_number_area.width() - 10
                 height = self.fontMetrics().height()