diff --git a/python/plugins/processing/gui/NumberInputPanel.py b/python/plugins/processing/gui/NumberInputPanel.py
index d8b40a10105..07a0c4f5dfd 100644
--- a/python/plugins/processing/gui/NumberInputPanel.py
+++ b/python/plugins/processing/gui/NumberInputPanel.py
@@ -45,11 +45,11 @@ class NumberInputPanel(BASE, WIDGET):
         self.isInteger = isInteger
         if self.isInteger:
             self.spnValue.setDecimals(0)
-            if maximum:
+            if maximum == 0 or maximum:
                 self.spnValue.setMaximum(maximum)
             else:
                 self.spnValue.setMaximum(99999999)
-            if minimum:
+            if minimum == 0 or minimum:
                 self.spnValue.setMinimum(minimum)
             else:
                 self.spnValue.setMinimum(-99999999)