diff --git a/python/plugins/db_manager/dlg_sql_layer_window.py b/python/plugins/db_manager/dlg_sql_layer_window.py
index ae3caa24729..8b3cfe80782 100644
--- a/python/plugins/db_manager/dlg_sql_layer_window.py
+++ b/python/plugins/db_manager/dlg_sql_layer_window.py
@@ -115,7 +115,7 @@ class DlgSqlLayerWindow(QWidget, Ui_Dialog):
 
         self.editSql.setFocus()
         self.editSql.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
-        self.editSql.setMarginVisible(True)
+        self.editSql.setLineNumbersVisible(True)
         self.initCompleter()
         self.editSql.textChanged.connect(lambda: self.setHasChanged(True))
 
diff --git a/python/plugins/db_manager/dlg_sql_window.py b/python/plugins/db_manager/dlg_sql_window.py
index c4a0a96c80b..cd63a5f8721 100644
--- a/python/plugins/db_manager/dlg_sql_window.py
+++ b/python/plugins/db_manager/dlg_sql_window.py
@@ -137,7 +137,7 @@ class DlgSqlWindow(QWidget, Ui_Dialog):
 
         self.editSql.setFocus()
         self.editSql.setVerticalScrollBarPolicy(Qt.ScrollBarAsNeeded)
-        self.editSql.setMarginVisible(True)
+        self.editSql.setLineNumbersVisible(True)
         self.initCompleter()
         self.editSql.textChanged.connect(lambda: self.setHasChanged(True))
 
diff --git a/python/plugins/db_manager/sqledit.py b/python/plugins/db_manager/sqledit.py
index c4ee457481f..91cf85c7b35 100644
--- a/python/plugins/db_manager/sqledit.py
+++ b/python/plugins/db_manager/sqledit.py
@@ -172,6 +172,3 @@ class SqlEdit(QsciScintilla):
 
     def lexer(self):
         return self.mylexer
-
-    def setMarginVisible(self, visible):
-        pass