diff --git a/python/plugins/processing/algs/gdal/GdalAlgorithm.py b/python/plugins/processing/algs/gdal/GdalAlgorithm.py
index 075841f1f27..706392abd3f 100644
--- a/python/plugins/processing/algs/gdal/GdalAlgorithm.py
+++ b/python/plugins/processing/algs/gdal/GdalAlgorithm.py
@@ -63,7 +63,7 @@ class GdalAlgorithm(QgsProcessingAlgorithm):
         return self.__class__()
 
     def createCustomParametersWidget(self, parent):
-        return GdalAlgorithmDialog(self)
+        return GdalAlgorithmDialog(self, parent=parent)
 
     def flags(self):
         return QgsProcessingAlgorithm.FlagSupportsBatch # cannot cancel!
diff --git a/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py b/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py
index cd80388b17b..29b34f55c48 100644
--- a/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py
+++ b/python/plugins/processing/algs/gdal/GdalAlgorithmDialog.py
@@ -55,8 +55,8 @@ from processing.tools.dataobjects import createContext
 
 class GdalAlgorithmDialog(AlgorithmDialog):
 
-    def __init__(self, alg):
-        super().__init__(alg)
+    def __init__(self, alg, parent=None):
+        super().__init__(alg, parent=parent)
         self.mainWidget().parametersHaveChanged()
 
     def getParametersPanel(self, alg, parent):