diff --git a/scripts/lib/bsp/engine.py b/scripts/lib/bsp/engine.py
index 857e5a09c0..7a98f447c3 100644
--- a/scripts/lib/bsp/engine.py
+++ b/scripts/lib/bsp/engine.py
@@ -658,7 +658,7 @@ class SubstrateBase(object):
         """
         Expand all tags in a line.
         """
-        expanded_line = AssignmentLine(line.strip())
+        expanded_line = AssignmentLine(line.rstrip())
 
         while start != -1:
             end = line.find(CLOSE_TAG, start)