diff --git a/src/actinia_core/core/common/process_chain.py b/src/actinia_core/core/common/process_chain.py
index 1b5f6393a..509417783 100644
--- a/src/actinia_core/core/common/process_chain.py
+++ b/src/actinia_core/core/common/process_chain.py
@@ -63,7 +63,7 @@
 
 def get_param_stdin_part(text):
     """Function to get method and filter from parameter value"""
-    for delimiter in ["::", " ", "+", "-", "*", ":", "(", ")"]:
+    for delimiter in {"::", " ", "+", "-", "*", ":", "(", ")", "/", "\\"}:
         text = text.split(delimiter, 1)[0]
     return text