diff --git a/selfdrive/car/card.py b/selfdrive/car/card.py
index cd12c688f9..1313a35a53 100755
--- a/selfdrive/car/card.py
+++ b/selfdrive/car/card.py
@@ -173,7 +173,7 @@ class Car:
 
     # Write CarParamsSP for controls
     # convert to pycapnp representation for caching and logging
-    self.CP_capnp = convert_to_capnp(self.CP)
+    self.CP_SP_capnp = convert_to_capnp(self.CP_SP)
     cp_sp_bytes = self.CP_SP_capnp.to_bytes()
     self.params.put("CarParamsSP", cp_sp_bytes)
     self.params.put_nonblocking("CarParamsSPCache", cp_sp_bytes)