diff --git a/NLP_tools-EZmaster/public/v1/en/postagger/analyze.ini b/NLP_tools-EZmaster/public/v1/en/postagger/analyze.ini
index 5e19f7b..8506271 100644
--- a/NLP_tools-EZmaster/public/v1/en/postagger/analyze.ini
+++ b/NLP_tools-EZmaster/public/v1/en/postagger/analyze.ini
@@ -37,7 +37,7 @@
 args = fix('-lang')
 args = en
 args = fix('-param')
-args = env('param',' ')
+args = env('param','{}')
 
 [dump]
 indent = env('indent', false)