diff --git a/python/plugins/processing/algs/grass/nviz.py b/python/plugins/processing/algs/grass/nviz.py
index 33be878f86d..9f5e0cca263 100644
--- a/python/plugins/processing/algs/grass/nviz.py
+++ b/python/plugins/processing/algs/grass/nviz.py
@@ -52,6 +52,10 @@ class nviz(GeoAlgorithm):
     GRASS_REGION_EXTENT_PARAMETER = 'GRASS_REGION_PARAMETER'
     GRASS_REGION_CELLSIZE_PARAMETER = 'GRASS_REGION_CELLSIZE_PARAMETER'
 
+    def __init__(self):
+        GeoAlgorithm.__init__(self)
+        self.showInModeler = False
+
     def getIcon(self):
         return QIcon(os.path.join(pluginPath, 'images', 'grass.png'))
 
diff --git a/python/plugins/processing/algs/grass7/nviz7.py b/python/plugins/processing/algs/grass7/nviz7.py
index 5f009dfcd7e..018440ff9ef 100644
--- a/python/plugins/processing/algs/grass7/nviz7.py
+++ b/python/plugins/processing/algs/grass7/nviz7.py
@@ -52,6 +52,10 @@ class nviz7(GeoAlgorithm):
     GRASS_REGION_EXTENT_PARAMETER = 'GRASS_REGION_PARAMETER'
     GRASS_REGION_CELLSIZE_PARAMETER = 'GRASS_REGION_CELLSIZE_PARAMETER'
 
+    def __init__(self):
+        GeoAlgorithm.__init__(self)
+        self.showInModeler = False
+
     def getIcon(self):
         return QtGui.QIcon(os.path.join(pluginPath, 'images', 'grass.png'))