diff --git a/python/plugins/processing/algs/gdal/fillnodata.py b/python/plugins/processing/algs/gdal/fillnodata.py
index bdc38c7b86ba..2f9f754587f9 100644
--- a/python/plugins/processing/algs/gdal/fillnodata.py
+++ b/python/plugins/processing/algs/gdal/fillnodata.py
@@ -113,7 +113,7 @@ def getConsoleCommands(self, parameters, context, feedback, executing=True):
         if self.parameterAsBool(parameters, self.NO_MASK, context):
             arguments.append('-nomask')
 
-        mask = self.parameterAsRasterLayer(parameters, self.INPUT, context)
+        mask = self.parameterAsRasterLayer(parameters, self.MASK_LAYER, context)
         if mask:
             arguments.append('-mask {}'.format(mask.source()))
 
diff --git a/python/plugins/processing/tests/GdalAlgorithmsTest.py b/python/plugins/processing/tests/GdalAlgorithmsTest.py
index a0b6eb227027..6e5c65cb5d99 100644
--- a/python/plugins/processing/tests/GdalAlgorithmsTest.py
+++ b/python/plugins/processing/tests/GdalAlgorithmsTest.py
@@ -49,6 +49,7 @@
 from processing.algs.gdal.retile import retile
 from processing.algs.gdal.translate import translate
 from processing.algs.gdal.warp import warp
+from processing.algs.gdal.fillnodata import fillnodata
 
 from qgis.core import (QgsProcessingContext,
                        QgsProcessingFeedback,
@@ -1340,6 +1341,59 @@ def testWarp(self):
              source + ' ' +
              'd:/temp/check.jpg'])
 
+    def testFillnodata(self):
+        context = QgsProcessingContext()
+        feedback = QgsProcessingFeedback()
+        source = os.path.join(testDataPath, 'dem.tif')
+        mask = os.path.join(testDataPath, 'raster.tif')
+        outsource = 'd:/temp/check.tif'
+        alg = fillnodata()
+        alg.initAlgorithm()
+
+        # with mask value
+        self.assertEqual(
+            alg.getConsoleCommands({'INPUT': source,
+                                    'BAND': 1,
+                                    'DISTANCE': 10,
+                                    'ITERATIONS': 0,
+                                    'MASK_LAYER': mask,
+                                    'NO_MASK': False,
+                                    'OUTPUT': outsource}, context, feedback),
+            ['gdal_fillnodata.py',
+             '-md 10 -b 1 -mask ' +
+             mask +
+             ' -of GTiff ' +
+             source + ' ' +
+             outsource])
+
+        # without mask value
+        self.assertEqual(
+            alg.getConsoleCommands({'INPUT': source,
+                                    'BAND': 1,
+                                    'DISTANCE': 10,
+                                    'ITERATIONS': 0,
+                                    'NO_MASK': False,
+                                    'OUTPUT': outsource}, context, feedback),
+            ['gdal_fillnodata.py',
+             '-md 10 -b 1 ' +
+             '-of GTiff ' +
+             source + ' ' +
+             outsource])
+
+        # nomask true
+        self.assertEqual(
+            alg.getConsoleCommands({'INPUT': source,
+                                    'BAND': 1,
+                                    'DISTANCE': 10,
+                                    'ITERATIONS': 0,
+                                    'NO_MASK': True,
+                                    'OUTPUT': outsource}, context, feedback),
+            ['gdal_fillnodata.py',
+             '-md 10 -b 1 -nomask ' +
+             '-of GTiff ' +
+             source + ' ' +
+             outsource])
+
 
 class TestGdalOgrToPostGis(unittest.TestCase):