diff --git a/python/plugins/processing/script/ScriptAlgorithm.py b/python/plugins/processing/script/ScriptAlgorithm.py
index 3cec3b3bb71..08611cca3ba 100644
--- a/python/plugins/processing/script/ScriptAlgorithm.py
+++ b/python/plugins/processing/script/ScriptAlgorithm.py
@@ -212,7 +212,7 @@ class ScriptAlgorithm(GeoAlgorithm):
         elif tokens[1].lower().strip().startswith('output file'):
             out = OutputFile()
             subtokens = tokens[1].split(' ')
-            if len(subtokens > 2):
+            if len(subtokens) > 2:
                 out.ext = subtokens[2]
         elif tokens[1].lower().strip().startswith('output directory'):
             out = OutputDirectory()