diff --git a/process/data_structure/pfcoil_variables.py b/process/data_structure/pfcoil_variables.py
index a0136c40ca..75f2937bb3 100644
--- a/process/data_structure/pfcoil_variables.py
+++ b/process/data_structure/pfcoil_variables.py
@@ -709,7 +709,7 @@ def init_pfcoil_variables():
 
     alfapf = 5e-10
     alstroh = 4.0e8
-    i_cs_stress = 0
+    i_cs_stress = 1
     a_cs_poloidal = 0.0
     a_cs_turn = 0.0
     awpoh = 0.0