diff --git a/python/plugins/processing/gui/TestTools.py b/python/plugins/processing/gui/TestTools.py
index c788469fad7..40d6ec60a05 100644
--- a/python/plugins/processing/gui/TestTools.py
+++ b/python/plugins/processing/gui/TestTools.py
@@ -246,6 +246,9 @@ def createTest(text):
     definition['params'] = params
 
     for i, out in enumerate([out for out in alg.destinationParameterDefinitions() if not out.flags() & QgsProcessingParameterDefinition.FlagHidden]):
+        if not out.name() in parameters:
+            continue
+
         token = parameters[out.name()]
 
         if isinstance(out, QgsProcessingParameterRasterDestination):