diff --git a/python/plugins/processing/gui/wrappers.py b/python/plugins/processing/gui/wrappers.py
index d78f7bebb16..05b31c3cd5c 100644
--- a/python/plugins/processing/gui/wrappers.py
+++ b/python/plugins/processing/gui/wrappers.py
@@ -763,7 +763,7 @@ class MapLayerWidgetWrapper(WidgetWrapper):
         if self.dialogType == DIALOG_STANDARD:
             try:
                 layer = self.combo.currentLayer()
-                if layer:
+                if layer is not None:
                     return layer
                 else:
                     return self.combo.currentText()
@@ -1226,7 +1226,7 @@ class VectorLayerWidgetWrapper(WidgetWrapper):
         if self.dialogType == DIALOG_STANDARD:
             try:
                 layer = self.combo.currentLayer()
-                if layer:
+                if layer is not None:
                     return layer
                 else:
                     return self.combo.currentText()